diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.closuresExt/models/jetbrains.mps.baseLanguage.closuresExt.types.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.closuresExt/models/jetbrains.mps.baseLanguage.closuresExt.types.mps
index 78b49465..b7dfc6ae 100644
--- a/samples/mpscore/languages/jetbrains.mps.baseLanguage.closuresExt/models/jetbrains.mps.baseLanguage.closuresExt.types.mps
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.closuresExt/models/jetbrains.mps.baseLanguage.closuresExt.types.mps
@@ -92,7 +92,6 @@
       </concept>
       <concept id="1068498886292" name="jetbrains.mps.baseLanguage.structure.ParameterDeclaration" flags="ir" index="37vLTG" />
       <concept id="1068498886294" name="jetbrains.mps.baseLanguage.structure.AssignmentExpression" flags="nn" index="37vLTI" />
-      <concept id="1225271283259" name="jetbrains.mps.baseLanguage.structure.NPEEqualsExpression" flags="nn" index="17R0WA" />
       <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
         <child id="5680397130376446158" name="type" index="1tU5fm" />
       </concept>
@@ -405,7 +404,6 @@
         <child id="1197687026896" name="keyType" index="3rHrn6" />
         <child id="1197687035757" name="valueType" index="3rHtpV" />
       </concept>
-      <concept id="1165525191778" name="jetbrains.mps.baseLanguage.collections.structure.GetFirstOperation" flags="nn" index="1uHKPH" />
       <concept id="1165530316231" name="jetbrains.mps.baseLanguage.collections.structure.IsEmptyOperation" flags="nn" index="1v1jN8" />
       <concept id="1225711141656" name="jetbrains.mps.baseLanguage.collections.structure.ListElementAccessExpression" flags="nn" index="1y4W85">
         <child id="1225711182005" name="list" index="1y566C" />
@@ -418,7 +416,6 @@
         <child id="1197932525128" name="key" index="3ElVtu" />
       </concept>
       <concept id="1176501494711" name="jetbrains.mps.baseLanguage.collections.structure.IsNotEmptyOperation" flags="nn" index="3GX2aA" />
-      <concept id="1172254888721" name="jetbrains.mps.baseLanguage.collections.structure.ContainsOperation" flags="nn" index="3JPx81" />
       <concept id="1180964022718" name="jetbrains.mps.baseLanguage.collections.structure.ConcatOperation" flags="nn" index="3QWeyG" />
     </language>
     <language id="c4803b19-6d89-4a3b-bf82-390769514add" name="jetbrains.mps.lang.coderules">
@@ -491,14 +488,13 @@
         <child id="6097203247156594418" name="variable" index="3iJhzY" />
         <child id="6097203247216428965" name="logical" index="3tb1AD" />
       </concept>
+      <concept id="8455178808320440061" name="jetbrains.mps.lang.coderules.structure.TermConstraint" flags="ng" index="1j3QaD">
+        <child id="8455178808320440237" name="term" index="1j3QfT" />
+      </concept>
+      <concept id="8455178808320440462" name="jetbrains.mps.lang.coderules.structure.IsGroundTermConstraint" flags="ng" index="1j3QNq" />
       <concept id="6097203247183580433" name="jetbrains.mps.lang.coderules.structure.ExpandMacroInputReference" flags="ng" index="3j8tct">
         <reference id="6097203247183580434" name="declaration" index="3j8tcu" />
       </concept>
-      <concept id="6097203247182936001" name="jetbrains.mps.lang.coderules.structure.ExpandMacroConstraint" flags="ng" index="3jbYBd">
-        <reference id="6097203247182937177" name="template" index="3jbY9l" />
-        <child id="6097203247182937145" name="input" index="3jbY8P" />
-        <child id="6097203247182937143" name="logical" index="3jbY8V" />
-      </concept>
       <concept id="6097203247184206287" name="jetbrains.mps.lang.coderules.structure.CallMacroConstraint" flags="ng" index="3jm4v3">
         <reference id="6097203247184207800" name="template" index="3jm46O" />
         <child id="6097203247185219723" name="argument" index="3jicU7" />
@@ -560,9 +556,7 @@
         <reference id="7368070394767091750" name="template" index="3AqCNq" />
         <child id="7368070394768117915" name="argument" index="3AunhB" />
       </concept>
-      <concept id="1534124788579507963" name="jetbrains.mps.lang.coderules.structure.OriginSpec" flags="ng" index="3Hbl2A">
-        <child id="1534124788579511329" name="origin" index="3Hbm9W" />
-      </concept>
+      <concept id="1534124788579507963" name="jetbrains.mps.lang.coderules.structure.OriginSpec" flags="ng" index="3Hbl2A" />
       <concept id="1553157749316176827" name="jetbrains.mps.lang.coderules.structure.PatternLogicalVariable" flags="ng" index="1HFMs5">
         <child id="5131913661993028915" name="variable" index="1uarlU" />
         <child id="5131913661993028917" name="value" index="1uarlW" />
@@ -676,6 +670,146 @@
     <property role="3GE5qa" value="rule" />
     <property role="TrG5h" value="Closures" />
     <ref role="2YbDB9" to="kqnc:34$A1Mf51rY" resolve="TypeOf" />
+    <node concept="3AqmO8" id="1uV2bz2eMl5" role="8PkJo">
+      <property role="TrG5h" value="hasScheme" />
+      <node concept="1zAUYm" id="1uV2bz2eMOO" role="1zAUyy">
+        <property role="TrG5h" value="node" />
+      </node>
+      <node concept="1zAUYm" id="1uV2bz2w_fC" role="1zAUyy">
+        <property role="TrG5h" value="term" />
+      </node>
+    </node>
+    <node concept="3AqmO8" id="1uV2bz2wD_l" role="8PkJo">
+      <property role="TrG5h" value="tryTypeOf" />
+      <node concept="1zAUYm" id="1uV2bz2wDZ3" role="1zAUyy">
+        <property role="TrG5h" value="node" />
+      </node>
+      <node concept="1zAUYm" id="1uV2bz2wDZ5" role="1zAUyy">
+        <property role="TrG5h" value="term" />
+      </node>
+    </node>
+    <node concept="1nLNMY" id="1uV2bz2BGf5" role="1nK1Vg">
+      <property role="TrG5h" value="solve_tryTypeOf" />
+      <node concept="3clFbS" id="1uV2bz2BGf6" role="1nLNMH">
+        <node concept="1nLNNL" id="1uV2bz2BGT_" role="3cqZAp">
+          <node concept="1nLNMm" id="1uV2bz2BGTA" role="1nLNNK">
+            <node concept="3Aq93q" id="1uV2bz2BGTB" role="1nLNMb">
+              <node concept="3I6sU6" id="1uV2bz2BGTC" role="3Ip0Jz">
+                <node concept="3I6s7M" id="1uV2bz2BGTD" role="3I6sU7">
+                  <node concept="3Aqt3T" id="1uV2bz2BGTE" role="3I6s78">
+                    <ref role="3AqCNq" node="1uV2bz2eMl5" resolve="hasScheme" />
+                    <node concept="a7P8L" id="1uV2bz2BRV5" role="3AunhB">
+                      <ref role="a7OzE" node="1uV2bz2BGWA" resolve="CL" />
+                    </node>
+                    <node concept="a7P8L" id="1uV2bz2BGTH" role="3AunhB">
+                      <ref role="a7OzE" node="1uV2bz2BGTQ" resolve="TScheme" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3Aq93q" id="1uV2bz2BGTI" role="1nLNMb">
+              <node concept="3I6sU6" id="1uV2bz2BGTJ" role="3Ip0Jz">
+                <node concept="3I6s7M" id="1uV2bz2BGTK" role="3I6sU7">
+                  <node concept="3Aqt3T" id="1uV2bz2BGTL" role="3I6s78">
+                    <ref role="3AqCNq" node="1uV2bz2wD_l" resolve="maybeTypeOf" />
+                    <node concept="a7P8L" id="1uV2bz2BVu1" role="3AunhB">
+                      <ref role="a7OzE" node="1uV2bz2BGWA" resolve="CL" />
+                    </node>
+                    <node concept="a7P8L" id="1uV2bz2BGTO" role="3AunhB">
+                      <ref role="a7OzE" node="1uV2bz2BGTR" resolve="FType" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3NuqgR" id="1uV2bz2BGW_" role="0Rg$4">
+              <node concept="aZer4" id="1uV2bz2BGWA" role="3XD1gS">
+                <property role="TrG5h" value="CL" />
+              </node>
+              <node concept="3Tqbb2" id="1uV2bz2BGWQ" role="3vLBG7" />
+            </node>
+            <node concept="3NuqgR" id="1uV2bz2BGTP" role="0Rg$4">
+              <node concept="aZer4" id="1uV2bz2BGTQ" role="3XD1gS">
+                <property role="TrG5h" value="TScheme" />
+              </node>
+              <node concept="aZer4" id="1uV2bz2BGTR" role="3XD1gS">
+                <property role="TrG5h" value="FType" />
+              </node>
+              <node concept="32pEOW" id="1uV2bz2BGTS" role="3vLBG7" />
+            </node>
+            <node concept="3xSepi" id="1uV2bz2BGTT" role="3xSepv">
+              <node concept="3Aq9E8" id="1uV2bz2BGTU" role="3xSepj">
+                <node concept="3I6sU6" id="1uV2bz2BGTV" role="3Ip0Jz">
+                  <node concept="3I6s7M" id="1uV2bz2BGTW" role="3I6sU7">
+                    <node concept="3A8Hvi" id="1uV2bz2BGTX" role="3I6s78">
+                      <node concept="a7P8L" id="1uV2bz2BGTY" role="3A8w4Q">
+                        <ref role="a7OzE" node="1uV2bz2BGTR" resolve="FType" />
+                      </node>
+                      <node concept="a7P8L" id="1uV2bz2BGTZ" role="3A8wtg">
+                        <ref role="a7OzE" node="1uV2bz2BGTQ" resolve="TScheme" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="1uV2bz2BGU0" role="3cqZAp" />
+        <node concept="1nLNNL" id="1uV2bz2BGU1" role="3cqZAp">
+          <node concept="1nLNMm" id="1uV2bz2BGU2" role="1nLNNK">
+            <node concept="3Aq93q" id="1uV2bz2BGU3" role="1nLNMb">
+              <node concept="3I6sU6" id="1uV2bz2BGU4" role="3Ip0Jz">
+                <node concept="3I6s7M" id="1uV2bz2BGU5" role="3I6sU7">
+                  <node concept="3Aqt3T" id="1uV2bz2BGU6" role="3I6s78">
+                    <ref role="3AqCNq" node="1uV2bz2wD_l" resolve="maybeTypeOf" />
+                    <node concept="a7P8L" id="1uV2bz2BZu2" role="3AunhB">
+                      <ref role="a7OzE" node="1uV2bz2BVub" resolve="CL" />
+                    </node>
+                    <node concept="a7P8L" id="1uV2bz2BGU9" role="3AunhB">
+                      <ref role="a7OzE" node="1uV2bz2BGUc" resolve="FType" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3NuqgR" id="1uV2bz2BVua" role="0Rg$4">
+              <node concept="aZer4" id="1uV2bz2BVub" role="3XD1gS">
+                <property role="TrG5h" value="CL" />
+              </node>
+              <node concept="3Tqbb2" id="1uV2bz2BVur" role="3vLBG7" />
+            </node>
+            <node concept="3NuqgR" id="1uV2bz2BGUa" role="0Rg$4">
+              <node concept="aZer4" id="1uV2bz2BGUb" role="3XD1gS">
+                <property role="TrG5h" value="TScheme" />
+              </node>
+              <node concept="aZer4" id="1uV2bz2BGUc" role="3XD1gS">
+                <property role="TrG5h" value="FType" />
+              </node>
+              <node concept="32pEOW" id="1uV2bz2BGUd" role="3vLBG7" />
+            </node>
+            <node concept="3xSepi" id="1uV2bz2BGUe" role="3xSepv">
+              <node concept="3Aq9E8" id="1uV2bz2BGUf" role="3xSepj">
+                <node concept="3I6sU6" id="1uV2bz2BGUg" role="3Ip0Jz">
+                  <node concept="3I6s7M" id="1uV2bz2BGUh" role="3I6sU7">
+                    <node concept="3Aqt3T" id="1uV2bz2BGUi" role="3I6s78">
+                      <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
+                      <node concept="a7P8L" id="1uV2bz2C30I" role="3AunhB">
+                        <ref role="a7OzE" node="1uV2bz2BVub" resolve="CL" />
+                      </node>
+                      <node concept="a7P8L" id="1uV2bz2BGUl" role="3AunhB">
+                        <ref role="a7OzE" node="1uV2bz2BGUc" resolve="FType" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
     <node concept="1nLNMY" id="4S1mDSNOe5g" role="1nK1Vg">
       <property role="TrG5h" value="closureLiteral" />
       <node concept="3clFbS" id="4S1mDSNOe5h" role="1nLNMH">
@@ -1050,20 +1184,6 @@
                                 </node>
                               </node>
                             </node>
-                            <node concept="9aQIb" id="vrUbziGpbI" role="9aQIa">
-                              <node concept="3clFbS" id="vrUbziGpbJ" role="9aQI4">
-                                <node concept="3Aqczg" id="vrUbzkloES" role="3cqZAp">
-                                  <node concept="3A8Hvi" id="vrUbzkloET" role="3Aqpz8">
-                                    <node concept="a7P8L" id="vrUbzkloEU" role="3A8wtg">
-                                      <ref role="a7OzE" node="vrUbziaSV4" resolve="VarRetT" />
-                                    </node>
-                                    <node concept="ns1u0" id="vrUbzkloFq" role="3A8w4Q">
-                                      <ref role="ns1xF" to="kqnc:7doxVE4sGJ1" resolve="nothing" />
-                                    </node>
-                                  </node>
-                                </node>
-                              </node>
-                            </node>
                           </node>
                           <node concept="3clFbH" id="1aCOVaclOY8" role="3cqZAp" />
                           <node concept="3Aqczg" id="vrUbziDm9Q" role="3cqZAp">
@@ -1091,52 +1211,40 @@
                           <node concept="3clFbH" id="vrUbzkltP6" role="3cqZAp" />
                           <node concept="1DcWWT" id="1aCOVabJ55N" role="3cqZAp">
                             <node concept="3clFbS" id="1aCOVabJ55O" role="2LFqv$">
-                              <node concept="3clFbJ" id="1aCOVabJ55P" role="3cqZAp">
-                                <node concept="2OqwBi" id="1aCOVac12ul" role="3clFbw">
-                                  <node concept="37vLTw" id="1aCOVabJ55S" role="2Oq$k0">
-                                    <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
-                                  </node>
-                                  <node concept="2qgKlT" id="1aCOVac13ad" role="2OqNvi">
-                                    <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
-                                  </node>
-                                </node>
-                                <node concept="3clFbS" id="1aCOVabJ55V" role="3clFbx">
-                                  <node concept="3Aqczg" id="1aCOVaczpDm" role="3cqZAp">
-                                    <node concept="3Aqt3T" id="1aCOVaczpDl" role="3Aqpz8">
-                                      <ref role="3AqCNq" to="kqnc:31ObkDYZPlP" resolve="inferenceVar" />
-                                      <node concept="37jhX" id="1aCOVaczpD_" role="3AunhB">
-                                        <node concept="37vLTw" id="1aCOVaczpDz" role="37jj2">
-                                          <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
-                                        </node>
-                                      </node>
-                                      <node concept="a7P8L" id="1aCOVaczpDR" role="3AunhB">
-                                        <ref role="a7OzE" node="vrUbzi7d8a" resolve="VarParamT" />
-                                        <node concept="2OqwBi" id="1aCOVaczpDS" role="3gCZO6">
-                                          <node concept="37vLTw" id="1aCOVaczpDT" role="2Oq$k0">
-                                            <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
-                                          </node>
-                                          <node concept="2bSWHS" id="1aCOVaczpDU" role="2OqNvi" />
-                                        </node>
-                                      </node>
+                              <node concept="3Aqczg" id="1aCOVaczpDm" role="3cqZAp">
+                                <node concept="3Aqt3T" id="1aCOVaczpDl" role="3Aqpz8">
+                                  <ref role="3AqCNq" to="kqnc:31ObkDYZPlP" resolve="inferenceVar" />
+                                  <node concept="37jhX" id="1aCOVaczpD_" role="3AunhB">
+                                    <node concept="37vLTw" id="1aCOVaczpDz" role="37jj2">
+                                      <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
                                     </node>
                                   </node>
-                                  <node concept="3Aqczg" id="1aCOVabJ55W" role="3cqZAp">
-                                    <node concept="3Aqt3T" id="1aCOVabJ55X" role="3Aqpz8">
-                                      <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
-                                      <node concept="37jhX" id="1aCOVabJ55Y" role="3AunhB">
-                                        <node concept="37vLTw" id="1aCOVabJ55Z" role="37jj2">
-                                          <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
-                                        </node>
+                                  <node concept="a7P8L" id="1aCOVaczpDR" role="3AunhB">
+                                    <ref role="a7OzE" node="vrUbzi7d8a" resolve="VarParamT" />
+                                    <node concept="2OqwBi" id="1aCOVaczpDS" role="3gCZO6">
+                                      <node concept="37vLTw" id="1aCOVaczpDT" role="2Oq$k0">
+                                        <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
                                       </node>
-                                      <node concept="a7P8L" id="1aCOVabJ560" role="3AunhB">
-                                        <ref role="a7OzE" node="vrUbzi7d8a" resolve="VarParamT" />
-                                        <node concept="2OqwBi" id="1aCOVabJ561" role="3gCZO6">
-                                          <node concept="37vLTw" id="1aCOVabJ562" role="2Oq$k0">
-                                            <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
-                                          </node>
-                                          <node concept="2bSWHS" id="1aCOVabJ563" role="2OqNvi" />
-                                        </node>
+                                      <node concept="2bSWHS" id="1aCOVaczpDU" role="2OqNvi" />
+                                    </node>
+                                  </node>
+                                </node>
+                              </node>
+                              <node concept="3Aqczg" id="1aCOVabJ55W" role="3cqZAp">
+                                <node concept="3Aqt3T" id="1aCOVabJ55X" role="3Aqpz8">
+                                  <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
+                                  <node concept="37jhX" id="1aCOVabJ55Y" role="3AunhB">
+                                    <node concept="37vLTw" id="1aCOVabJ55Z" role="37jj2">
+                                      <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
+                                    </node>
+                                  </node>
+                                  <node concept="a7P8L" id="1aCOVabJ560" role="3AunhB">
+                                    <ref role="a7OzE" node="vrUbzi7d8a" resolve="VarParamT" />
+                                    <node concept="2OqwBi" id="1aCOVabJ561" role="3gCZO6">
+                                      <node concept="37vLTw" id="1aCOVabJ562" role="2Oq$k0">
+                                        <ref role="3cqZAo" node="1aCOVabJ564" resolve="pdecl" />
                                       </node>
+                                      <node concept="2bSWHS" id="1aCOVabJ563" role="2OqNvi" />
                                     </node>
                                   </node>
                                 </node>
@@ -1148,48 +1256,72 @@
                                 <ref role="ehGHo" to="tpee:fz7vLUk" resolve="ParameterDeclaration" />
                               </node>
                             </node>
-                            <node concept="2OqwBi" id="1aCOVabJ566" role="1DdaDG">
-                              <node concept="3A2sRY" id="1aCOVabJ567" role="2Oq$k0">
-                                <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                            <node concept="2OqwBi" id="1uV2bz2bOWi" role="1DdaDG">
+                              <node concept="2OqwBi" id="1aCOVabJ566" role="2Oq$k0">
+                                <node concept="3A2sRY" id="1aCOVabJ567" role="2Oq$k0">
+                                  <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                                </node>
+                                <node concept="3Tsc0h" id="1aCOVabJ568" role="2OqNvi">
+                                  <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
+                                </node>
                               </node>
-                              <node concept="3Tsc0h" id="1aCOVabJ568" role="2OqNvi">
-                                <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
+                              <node concept="3zZkjj" id="1uV2bz2c2CW" role="2OqNvi">
+                                <node concept="1bVj0M" id="1uV2bz2c2CY" role="23t8la">
+                                  <node concept="3clFbS" id="1uV2bz2c2CZ" role="1bW5cS">
+                                    <node concept="3clFbF" id="1uV2bz2c2O4" role="3cqZAp">
+                                      <node concept="2OqwBi" id="1uV2bz2c3jb" role="3clFbG">
+                                        <node concept="37vLTw" id="1uV2bz2c2O3" role="2Oq$k0">
+                                          <ref role="3cqZAo" node="1uV2bz2c2D0" resolve="it" />
+                                        </node>
+                                        <node concept="2qgKlT" id="1uV2bz2c46O" role="2OqNvi">
+                                          <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
+                                        </node>
+                                      </node>
+                                    </node>
+                                  </node>
+                                  <node concept="Rh6nW" id="1uV2bz2c2D0" role="1bW2Oz">
+                                    <property role="TrG5h" value="it" />
+                                    <node concept="2jxLKc" id="1uV2bz2c2D1" role="1tU5fm" />
+                                  </node>
+                                </node>
                               </node>
                             </node>
                           </node>
-                          <node concept="3Aqczg" id="vrUbzkltNw" role="3cqZAp">
-                            <node concept="3Aqt3T" id="vrUbzkltNv" role="3Aqpz8">
-                              <ref role="3AqCNq" node="vrUbzkloEo" resolve="typeScheme" />
-                              <node concept="37jhX" id="vrUbzkxRYT" role="3AunhB">
-                                <node concept="3A2sRY" id="vrUbzkxRYR" role="37jj2">
+                          <node concept="3clFbH" id="1uV2bz2hJAd" role="3cqZAp" />
+                          <node concept="3Aqczg" id="1uV2bz27BEp" role="3cqZAp">
+                            <node concept="3Aqt3T" id="1uV2bz27BEq" role="3Aqpz8">
+                              <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
+                              <node concept="37jhX" id="1uV2bz27BEr" role="3AunhB">
+                                <node concept="3A2sRY" id="1uV2bz27BEs" role="37jj2">
                                   <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
                                 </node>
                               </node>
-                              <node concept="a7P8L" id="vrUbzkltOP" role="3AunhB">
+                              <node concept="a7P8L" id="1uV2bz27BEt" role="3AunhB">
+                                <ref role="a7OzE" node="vrUbziq_PX" resolve="FunT" />
+                              </node>
+                            </node>
+                          </node>
+                          <node concept="3Aqczg" id="1uV2bz2eMSz" role="3cqZAp">
+                            <node concept="3Aqt3T" id="1uV2bz2eMSy" role="3Aqpz8">
+                              <ref role="3AqCNq" node="1uV2bz2eMl5" resolve="typeSchemeOf" />
+                              <node concept="37jhX" id="1uV2bz2eN1B" role="3AunhB">
+                                <node concept="3A2sRY" id="1uV2bz2eN1_" role="37jj2">
+                                  <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                                </node>
+                              </node>
+                              <node concept="a7P8L" id="1uV2bz2w_fQ" role="3AunhB">
                                 <ref role="a7OzE" node="vrUbziq_PX" resolve="FunT" />
                               </node>
                             </node>
                           </node>
                           <node concept="1DcWWT" id="1aCOVacQcPi" role="3cqZAp">
                             <node concept="3clFbS" id="1aCOVacQcPj" role="2LFqv$">
-                              <node concept="3clFbJ" id="1aCOVacQcPk" role="3cqZAp">
-                                <node concept="2OqwBi" id="1aCOVacQcPl" role="3clFbw">
-                                  <node concept="37vLTw" id="1aCOVacQcPm" role="2Oq$k0">
-                                    <ref role="3cqZAo" node="1aCOVacQcPD" resolve="pdecl" />
-                                  </node>
-                                  <node concept="2qgKlT" id="1aCOVacQcPn" role="2OqNvi">
-                                    <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
-                                  </node>
-                                </node>
-                                <node concept="3clFbS" id="1aCOVacQcPo" role="3clFbx">
-                                  <node concept="3Aqczg" id="1aCOVacQcPp" role="3cqZAp">
-                                    <node concept="3Aqt3T" id="1aCOVacQcPq" role="3Aqpz8">
-                                      <ref role="3AqCNq" to="kqnc:31ObkDYZPm0" resolve="resolveInferenceVar" />
-                                      <node concept="37jhX" id="1aCOVacQcPr" role="3AunhB">
-                                        <node concept="37vLTw" id="1aCOVacQcPs" role="37jj2">
-                                          <ref role="3cqZAo" node="1aCOVacQcPD" resolve="pdecl" />
-                                        </node>
-                                      </node>
+                              <node concept="3Aqczg" id="1aCOVacQcPp" role="3cqZAp">
+                                <node concept="3Aqt3T" id="1aCOVacQcPq" role="3Aqpz8">
+                                  <ref role="3AqCNq" to="kqnc:31ObkDYZPm0" resolve="resolveInferenceVar" />
+                                  <node concept="37jhX" id="1aCOVacQcPr" role="3AunhB">
+                                    <node concept="37vLTw" id="1aCOVacQcPs" role="37jj2">
+                                      <ref role="3cqZAo" node="1aCOVacQcPD" resolve="pdecl" />
                                     </node>
                                   </node>
                                 </node>
@@ -1201,12 +1333,34 @@
                                 <ref role="ehGHo" to="tpee:fz7vLUk" resolve="ParameterDeclaration" />
                               </node>
                             </node>
-                            <node concept="2OqwBi" id="1aCOVacQcPF" role="1DdaDG">
-                              <node concept="3A2sRY" id="1aCOVacQcPG" role="2Oq$k0">
-                                <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                            <node concept="2OqwBi" id="1uV2bz2c4pf" role="1DdaDG">
+                              <node concept="2OqwBi" id="1aCOVacQcPF" role="2Oq$k0">
+                                <node concept="3A2sRY" id="1aCOVacQcPG" role="2Oq$k0">
+                                  <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                                </node>
+                                <node concept="3Tsc0h" id="1aCOVacQcPH" role="2OqNvi">
+                                  <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
+                                </node>
                               </node>
-                              <node concept="3Tsc0h" id="1aCOVacQcPH" role="2OqNvi">
-                                <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
+                              <node concept="3zZkjj" id="1uV2bz2cagO" role="2OqNvi">
+                                <node concept="1bVj0M" id="1uV2bz2cagQ" role="23t8la">
+                                  <node concept="3clFbS" id="1uV2bz2cagR" role="1bW5cS">
+                                    <node concept="3clFbF" id="1uV2bz2capD" role="3cqZAp">
+                                      <node concept="2OqwBi" id="1uV2bz2caxk" role="3clFbG">
+                                        <node concept="37vLTw" id="1uV2bz2capC" role="2Oq$k0">
+                                          <ref role="3cqZAo" node="1uV2bz2cagS" resolve="it" />
+                                        </node>
+                                        <node concept="2qgKlT" id="1uV2bz2caMT" role="2OqNvi">
+                                          <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
+                                        </node>
+                                      </node>
+                                    </node>
+                                  </node>
+                                  <node concept="Rh6nW" id="1uV2bz2cagS" role="1bW2Oz">
+                                    <property role="TrG5h" value="it" />
+                                    <node concept="2jxLKc" id="1uV2bz2cagT" role="1tU5fm" />
+                                  </node>
+                                </node>
                               </node>
                             </node>
                           </node>
@@ -1251,35 +1405,21 @@
                       <node concept="3clFbS" id="vrUbzklqox" role="3IrJb0">
                         <node concept="1DcWWT" id="vrUbzklrRQ" role="3cqZAp">
                           <node concept="3clFbS" id="vrUbzklrRT" role="2LFqv$">
-                            <node concept="3clFbJ" id="vrUbzklsr2" role="3cqZAp">
-                              <node concept="3fqX7Q" id="vrUbzklsr9" role="3clFbw">
-                                <node concept="2OqwBi" id="1aCOVac0HLb" role="3fr31v">
-                                  <node concept="37vLTw" id="vrUbzklsrh" role="2Oq$k0">
+                            <node concept="3Aqczg" id="vrUbzkltg_" role="3cqZAp">
+                              <node concept="3Aqt3T" id="vrUbzkltg$" role="3Aqpz8">
+                                <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
+                                <node concept="37jhX" id="vrUbzkltgM" role="3AunhB">
+                                  <node concept="37vLTw" id="vrUbzkltgK" role="37jj2">
                                     <ref role="3cqZAo" node="vrUbzklrRU" resolve="pdecl" />
                                   </node>
-                                  <node concept="2qgKlT" id="1aCOVac0IvK" role="2OqNvi">
-                                    <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
-                                  </node>
                                 </node>
-                              </node>
-                              <node concept="3clFbS" id="vrUbzklsr4" role="3clFbx">
-                                <node concept="3Aqczg" id="vrUbzkltg_" role="3cqZAp">
-                                  <node concept="3Aqt3T" id="vrUbzkltg$" role="3Aqpz8">
-                                    <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
-                                    <node concept="37jhX" id="vrUbzkltgM" role="3AunhB">
-                                      <node concept="37vLTw" id="vrUbzkltgK" role="37jj2">
-                                        <ref role="3cqZAo" node="vrUbzklrRU" resolve="pdecl" />
-                                      </node>
-                                    </node>
-                                    <node concept="a7P8L" id="vrUbzklth1" role="3AunhB">
-                                      <ref role="a7OzE" node="vrUbzi7d8a" resolve="VarParamT" />
-                                      <node concept="2OqwBi" id="vrUbzkltiy" role="3gCZO6">
-                                        <node concept="37vLTw" id="vrUbzkltim" role="2Oq$k0">
-                                          <ref role="3cqZAo" node="vrUbzklrRU" resolve="pdecl" />
-                                        </node>
-                                        <node concept="2bSWHS" id="vrUbzkltkc" role="2OqNvi" />
-                                      </node>
+                                <node concept="a7P8L" id="vrUbzklth1" role="3AunhB">
+                                  <ref role="a7OzE" node="vrUbzi7d8a" resolve="VarParamT" />
+                                  <node concept="2OqwBi" id="vrUbzkltiy" role="3gCZO6">
+                                    <node concept="37vLTw" id="vrUbzkltim" role="2Oq$k0">
+                                      <ref role="3cqZAo" node="vrUbzklrRU" resolve="pdecl" />
                                     </node>
+                                    <node concept="2bSWHS" id="vrUbzkltkc" role="2OqNvi" />
                                   </node>
                                 </node>
                               </node>
@@ -1291,12 +1431,36 @@
                               <ref role="ehGHo" to="tpee:fz7vLUk" resolve="ParameterDeclaration" />
                             </node>
                           </node>
-                          <node concept="2OqwBi" id="vrUbzklrRZ" role="1DdaDG">
-                            <node concept="3A2sRY" id="vrUbzklrS0" role="2Oq$k0">
-                              <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                          <node concept="2OqwBi" id="1uV2bz2bppG" role="1DdaDG">
+                            <node concept="2OqwBi" id="vrUbzklrRZ" role="2Oq$k0">
+                              <node concept="3A2sRY" id="vrUbzklrS0" role="2Oq$k0">
+                                <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                              </node>
+                              <node concept="3Tsc0h" id="vrUbzklrS1" role="2OqNvi">
+                                <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
+                              </node>
                             </node>
-                            <node concept="3Tsc0h" id="vrUbzklrS1" role="2OqNvi">
-                              <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
+                            <node concept="3zZkjj" id="1uV2bz2bI5F" role="2OqNvi">
+                              <node concept="1bVj0M" id="1uV2bz2bI5H" role="23t8la">
+                                <node concept="3clFbS" id="1uV2bz2bI5I" role="1bW5cS">
+                                  <node concept="3clFbF" id="1uV2bz2bIgE" role="3cqZAp">
+                                    <node concept="3fqX7Q" id="1uV2bz2bJVN" role="3clFbG">
+                                      <node concept="2OqwBi" id="1uV2bz2bJVP" role="3fr31v">
+                                        <node concept="37vLTw" id="1uV2bz2bJVQ" role="2Oq$k0">
+                                          <ref role="3cqZAo" node="1uV2bz2bI5J" resolve="it" />
+                                        </node>
+                                        <node concept="2qgKlT" id="1uV2bz2bJVR" role="2OqNvi">
+                                          <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
+                                        </node>
+                                      </node>
+                                    </node>
+                                  </node>
+                                </node>
+                                <node concept="Rh6nW" id="1uV2bz2bI5J" role="1bW2Oz">
+                                  <property role="TrG5h" value="it" />
+                                  <node concept="2jxLKc" id="1uV2bz2bI5K" role="1tU5fm" />
+                                </node>
+                              </node>
                             </node>
                           </node>
                         </node>
@@ -1627,6 +1791,9 @@
                   <node concept="34oBXx" id="4S1mDSNOmtS" role="2OqNvi" />
                 </node>
               </node>
+              <node concept="32pEOW" id="4S1mDSNOelv" role="3vLBG7" />
+            </node>
+            <node concept="3NuqgR" id="7ZvrONsTKAS" role="0Rg$4">
               <node concept="aZer4" id="4Z0pyZIFO6s" role="3XD1gS">
                 <property role="TrG5h" value="ExitPoints" />
                 <node concept="2OqwBi" id="4Z0pyZIFOZU" role="3gj$pD">
@@ -1636,9 +1803,15 @@
                   <node concept="34oBXx" id="4Z0pyZIFQ0$" role="2OqNvi" />
                 </node>
               </node>
-              <node concept="32pEOW" id="4S1mDSNOelv" role="3vLBG7" />
-            </node>
-            <node concept="3NuqgR" id="7ZvrONsTKAS" role="0Rg$4">
+              <node concept="aZer4" id="1uV2bz2$O9r" role="3XD1gS">
+                <property role="TrG5h" value="StripEP" />
+                <node concept="2OqwBi" id="1uV2bz2$O9s" role="3gj$pD">
+                  <node concept="37vLTw" id="1uV2bz2$O9t" role="2Oq$k0">
+                    <ref role="3cqZAo" node="zb1Nk79lNY" resolve="exits" />
+                  </node>
+                  <node concept="34oBXx" id="1uV2bz2$O9u" role="2OqNvi" />
+                </node>
+              </node>
               <node concept="aZer4" id="7ZvrONsTKAT" role="3XD1gS">
                 <property role="TrG5h" value="LUB" />
                 <node concept="2OqwBi" id="7ZvrONsTLyz" role="3gj$pD">
@@ -1650,52 +1823,17 @@
               </node>
               <node concept="32pEOW" id="7ZvrONsTKBc" role="3vLBG7" />
             </node>
+            <node concept="3NuqgR" id="1uV2bz291_G" role="0Rg$4">
+              <node concept="aZer4" id="1uV2bz291_H" role="3XD1gS">
+                <property role="TrG5h" value="TScheme" />
+              </node>
+              <node concept="32pEOW" id="1uV2bz291B5" role="3vLBG7" />
+            </node>
             <node concept="3xSepi" id="4S1mDSNOvMH" role="3xSepv">
               <node concept="3Aq9E8" id="4S1mDSNOvMI" role="3xSepj">
                 <node concept="3I6sU6" id="4S1mDSNOvMJ" role="3Ip0Jz">
                   <node concept="3IrJb3" id="4Z0pyZIFwdj" role="3I6sU7">
                     <node concept="3clFbS" id="4Z0pyZIFwdk" role="3IrJb0">
-                      <node concept="1DcWWT" id="1aCOVaczpGE" role="3cqZAp">
-                        <node concept="3clFbS" id="1aCOVaczpGF" role="2LFqv$">
-                          <node concept="3clFbJ" id="1aCOVaczpGG" role="3cqZAp">
-                            <node concept="2OqwBi" id="1aCOVaczpGH" role="3clFbw">
-                              <node concept="37vLTw" id="1aCOVaczpGI" role="2Oq$k0">
-                                <ref role="3cqZAo" node="1aCOVaczpH1" resolve="pdecl" />
-                              </node>
-                              <node concept="2qgKlT" id="1aCOVaczpGJ" role="2OqNvi">
-                                <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
-                              </node>
-                            </node>
-                            <node concept="3clFbS" id="1aCOVaczpGK" role="3clFbx">
-                              <node concept="3Aqczg" id="1aCOVaczpGL" role="3cqZAp">
-                                <node concept="3Aqt3T" id="1aCOVaczpGM" role="3Aqpz8">
-                                  <ref role="3AqCNq" to="kqnc:31ObkDYZPm0" resolve="resolveInferenceVar" />
-                                  <node concept="37jhX" id="1aCOVaczpGN" role="3AunhB">
-                                    <node concept="37vLTw" id="1aCOVaczpGO" role="37jj2">
-                                      <ref role="3cqZAo" node="1aCOVaczpH1" resolve="pdecl" />
-                                    </node>
-                                  </node>
-                                </node>
-                              </node>
-                            </node>
-                          </node>
-                        </node>
-                        <node concept="3cpWsn" id="1aCOVaczpH1" role="1Duv9x">
-                          <property role="TrG5h" value="pdecl" />
-                          <node concept="3Tqbb2" id="1aCOVaczpH2" role="1tU5fm">
-                            <ref role="ehGHo" to="tpee:fz7vLUk" resolve="ParameterDeclaration" />
-                          </node>
-                        </node>
-                        <node concept="2OqwBi" id="1aCOVaczpH3" role="1DdaDG">
-                          <node concept="3A2sRY" id="1aCOVaczpH4" role="2Oq$k0">
-                            <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
-                          </node>
-                          <node concept="3Tsc0h" id="1aCOVaczpH5" role="2OqNvi">
-                            <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="3clFbH" id="1aCOVaczpEh" role="3cqZAp" />
                       <node concept="3clFbJ" id="4Z0pyZIFySA" role="3cqZAp">
                         <node concept="2OqwBi" id="4Z0pyZIFzVu" role="3clFbw">
                           <node concept="37vLTw" id="zb1Nk79m24" role="2Oq$k0">
@@ -1764,6 +1902,23 @@
                                   </node>
                                 </node>
                               </node>
+                              <node concept="3Aqczg" id="1uV2bz2z1GH" role="3cqZAp">
+                                <node concept="3Aqt3T" id="1uV2bz2z1GG" role="3Aqpz8">
+                                  <ref role="3AqCNq" to="kqnc:2HYHa0WMaId" resolve="stripValue" />
+                                  <node concept="a7P8L" id="1uV2bz2z1HA" role="3AunhB">
+                                    <ref role="a7OzE" node="1uV2bz2$O9r" resolve="Strip" />
+                                    <node concept="3cmrfG" id="1uV2bz2z1HB" role="3gCZO6">
+                                      <property role="3cmrfH" value="0" />
+                                    </node>
+                                  </node>
+                                  <node concept="a7P8L" id="1uV2bz2z1QI" role="3AunhB">
+                                    <ref role="a7OzE" node="4Z0pyZIFO6s" resolve="ExitPoints" />
+                                    <node concept="3cmrfG" id="1uV2bz2z1QJ" role="3gCZO6">
+                                      <property role="3cmrfH" value="0" />
+                                    </node>
+                                  </node>
+                                </node>
+                              </node>
                               <node concept="3Aqczg" id="7ZvrONsTNvl" role="3cqZAp">
                                 <node concept="3A8Hvi" id="7ZvrONsTNvf" role="3Aqpz8">
                                   <node concept="a7P8L" id="7ZvrONsTNvE" role="3A8wtg">
@@ -1773,7 +1928,7 @@
                                     </node>
                                   </node>
                                   <node concept="a7P8L" id="362mGRZQkYB" role="3A8w4Q">
-                                    <ref role="a7OzE" node="4Z0pyZIFO6s" resolve="ExitPoints" />
+                                    <ref role="a7OzE" node="1uV2bz2$O9r" resolve="Strip" />
                                     <node concept="3cmrfG" id="362mGRZQkZj" role="3gCZO6">
                                       <property role="3cmrfH" value="0" />
                                     </node>
@@ -1782,6 +1937,33 @@
                               </node>
                               <node concept="1Dw8fO" id="7ZvrONsTNwa" role="3cqZAp">
                                 <node concept="3clFbS" id="7ZvrONsTNwc" role="2LFqv$">
+                                  <node concept="3Aqczg" id="1uV2bz2$PdK" role="3cqZAp">
+                                    <node concept="3Aqt3T" id="1uV2bz2$PdL" role="3Aqpz8">
+                                      <ref role="3AqCNq" to="kqnc:2HYHa0WMaId" resolve="stripValue" />
+                                      <node concept="a7P8L" id="1uV2bz2$PdM" role="3AunhB">
+                                        <ref role="a7OzE" node="1uV2bz2$O9r" resolve="Strip" />
+                                        <node concept="3cpWs3" id="1uV2bz2$QdD" role="3gCZO6">
+                                          <node concept="3cmrfG" id="1uV2bz2$QdG" role="3uHU7w">
+                                            <property role="3cmrfH" value="1" />
+                                          </node>
+                                          <node concept="37vLTw" id="1uV2bz2$PkE" role="3uHU7B">
+                                            <ref role="3cqZAo" node="7ZvrONsTNwd" resolve="i" />
+                                          </node>
+                                        </node>
+                                      </node>
+                                      <node concept="a7P8L" id="1uV2bz2$PdO" role="3AunhB">
+                                        <ref role="a7OzE" node="4Z0pyZIFO6s" resolve="ExitPoints" />
+                                        <node concept="3cpWs3" id="1uV2bz2$Q$a" role="3gCZO6">
+                                          <node concept="3cmrfG" id="1uV2bz2$Q$d" role="3uHU7w">
+                                            <property role="3cmrfH" value="1" />
+                                          </node>
+                                          <node concept="37vLTw" id="1uV2bz2$Qxf" role="3uHU7B">
+                                            <ref role="3cqZAo" node="7ZvrONsTNwd" resolve="i" />
+                                          </node>
+                                        </node>
+                                      </node>
+                                    </node>
+                                  </node>
                                   <node concept="3Aqczg" id="7ZvrONsTR6w" role="3cqZAp">
                                     <node concept="3Aqt3T" id="7ZvrONsTR6u" role="3Aqpz8">
                                       <ref role="3AqCNq" to="kqnc:2q0gzCFHesp" resolve="lub" />
@@ -1803,7 +1985,7 @@
                                         </node>
                                       </node>
                                       <node concept="a7P8L" id="7ZvrONsTRoy" role="3AunhB">
-                                        <ref role="a7OzE" node="4Z0pyZIFO6s" resolve="ExitPoints" />
+                                        <ref role="a7OzE" node="1uV2bz2$O9r" resolve="Strip" />
                                         <node concept="3cpWs3" id="362mGRZQm3b" role="3gCZO6">
                                           <node concept="3cmrfG" id="362mGRZQm3S" role="3uHU7w">
                                             <property role="3cmrfH" value="1" />
@@ -2044,7 +2226,7 @@
                       </node>
                       <node concept="3Aqczg" id="4Z0pyZIFwdl" role="3cqZAp">
                         <node concept="3Aqt3T" id="4S1mDSNOvMN" role="3Aqpz8">
-                          <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
+                          <ref role="3AqCNq" node="1uV2bz2wD_l" resolve="maybeTypeOf" />
                           <node concept="37jhX" id="4S1mDSNOvMV" role="3AunhB">
                             <node concept="3A2sRY" id="4S1mDSNOvMT" role="37jj2">
                               <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
@@ -2060,6 +2242,67 @@
                 </node>
               </node>
             </node>
+            <node concept="3Aq9_M" id="1uV2bz28f0b" role="1nLNMa">
+              <node concept="3I6sU6" id="1uV2bz28f0c" role="3Ip0Jz">
+                <node concept="3IrJb3" id="1uV2bz28AQf" role="3I6sU7">
+                  <node concept="3clFbS" id="1uV2bz28AQg" role="3IrJb0">
+                    <node concept="1DcWWT" id="1uV2bz28AQh" role="3cqZAp">
+                      <node concept="3cpWsn" id="1uV2bz28AQi" role="1Duv9x">
+                        <property role="TrG5h" value="pdecl" />
+                        <node concept="3Tqbb2" id="1uV2bz28AQj" role="1tU5fm">
+                          <ref role="ehGHo" to="tpee:fz7vLUk" resolve="ParameterDeclaration" />
+                        </node>
+                      </node>
+                      <node concept="2OqwBi" id="1uV2bz28AQk" role="1DdaDG">
+                        <node concept="2OqwBi" id="1uV2bz28AQl" role="2Oq$k0">
+                          <node concept="3A2sRY" id="1uV2bz28AQm" role="2Oq$k0">
+                            <ref role="3A2yKK" node="4S1mDSNOe5l" resolve="cl" />
+                          </node>
+                          <node concept="3Tsc0h" id="1uV2bz28AQn" role="2OqNvi">
+                            <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
+                          </node>
+                        </node>
+                        <node concept="3zZkjj" id="1uV2bz28AQo" role="2OqNvi">
+                          <node concept="1bVj0M" id="1uV2bz28AQp" role="23t8la">
+                            <node concept="3clFbS" id="1uV2bz28AQq" role="1bW5cS">
+                              <node concept="3clFbF" id="1uV2bz28AQr" role="3cqZAp">
+                                <node concept="2OqwBi" id="1uV2bz28AQs" role="3clFbG">
+                                  <node concept="37vLTw" id="1uV2bz28AQt" role="2Oq$k0">
+                                    <ref role="3cqZAo" node="1uV2bz28AQv" resolve="it" />
+                                  </node>
+                                  <node concept="2qgKlT" id="1uV2bz28AQu" role="2OqNvi">
+                                    <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
+                                  </node>
+                                </node>
+                              </node>
+                            </node>
+                            <node concept="Rh6nW" id="1uV2bz28AQv" role="1bW2Oz">
+                              <property role="TrG5h" value="it" />
+                              <node concept="2jxLKc" id="1uV2bz28AQw" role="1tU5fm" />
+                            </node>
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="3clFbS" id="1uV2bz28AQx" role="2LFqv$">
+                        <node concept="3Aqczg" id="1uV2bz28AQy" role="3cqZAp">
+                          <node concept="1j3QNq" id="1uV2bz28M_u" role="3Aqpz8">
+                            <node concept="a7P8L" id="1uV2bz28M_$" role="1j3QfT">
+                              <ref role="a7OzE" node="4S1mDSNOe5N" resolve="ParamT" />
+                              <node concept="2OqwBi" id="1uV2bz28MQG" role="3gCZO6">
+                                <node concept="37vLTw" id="1uV2bz28MAc" role="2Oq$k0">
+                                  <ref role="3cqZAo" node="1uV2bz28AQi" resolve="pdecl" />
+                                </node>
+                                <node concept="2bSWHS" id="1uV2bz28NoU" role="2OqNvi" />
+                              </node>
+                            </node>
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
           </node>
         </node>
         <node concept="3clFbH" id="4Z0pyZIFov8" role="3cqZAp" />
@@ -15213,2089 +15456,6 @@
     </node>
     <node concept="3Tm1VV" id="3DgB4rOynmO" role="1B3o_S" />
   </node>
-  <node concept="AVZre" id="vrUbzkloxv">
-    <property role="3GE5qa" value="rule" />
-    <property role="TrG5h" value="ClosureTypeScheme" />
-    <ref role="2YbDB9" to="kqnc:34$A1Mf51rY" resolve="TypeOf" />
-    <node concept="3AqmO8" id="vrUbzkloEo" role="8PkJo">
-      <property role="TrG5h" value="typeScheme" />
-      <node concept="1zAUYm" id="vrUbzkloEq" role="1zAUyy">
-        <property role="TrG5h" value="node" />
-      </node>
-      <node concept="1zAUYm" id="vrUbzkloEs" role="1zAUyy">
-        <property role="TrG5h" value="scheme" />
-      </node>
-    </node>
-    <node concept="1nLNMY" id="vrUbzkwvvZ" role="1nK1Vg">
-      <property role="TrG5h" value="instanceMethodCallOperation" />
-      <node concept="3clFbS" id="vrUbzkwvw0" role="1nLNMH">
-        <node concept="3cpWs8" id="1aCOVac7BGB" role="3cqZAp">
-          <node concept="3cpWsn" id="1aCOVac7BGC" role="3cpWs9">
-            <property role="TrG5h" value="argsWithTS" />
-            <property role="3TUv4t" value="true" />
-            <node concept="2I9FWS" id="1aCOVac7GDV" role="1tU5fm" />
-            <node concept="2OqwBi" id="1aCOVac7BGD" role="33vP2m">
-              <node concept="2OqwBi" id="1aCOVac7BGE" role="2Oq$k0">
-                <node concept="2OqwBi" id="1aCOVac7BGF" role="2Oq$k0">
-                  <node concept="3A2sRY" id="1aCOVac7BGG" role="2Oq$k0">
-                    <ref role="3A2yKK" node="vrUbzkwvw2" resolve="imco" />
-                  </node>
-                  <node concept="3Tsc0h" id="1aCOVac7BGH" role="2OqNvi">
-                    <ref role="3TtcxE" to="tpee:fz7wK6I" resolve="actualArgument" />
-                  </node>
-                </node>
-                <node concept="3zZkjj" id="1aCOVac7FmE" role="2OqNvi">
-                  <node concept="1bVj0M" id="1aCOVac7FmG" role="23t8la">
-                    <node concept="3clFbS" id="1aCOVac7FmH" role="1bW5cS">
-                      <node concept="3clFbF" id="1aCOVac7FmI" role="3cqZAp">
-                        <node concept="2OqwBi" id="1aCOVac7FmJ" role="3clFbG">
-                          <node concept="2OqwBi" id="1aCOVac7FmK" role="2Oq$k0">
-                            <node concept="1PxgMI" id="1aCOVac7FmL" role="2Oq$k0">
-                              <property role="1BlNFB" value="true" />
-                              <node concept="chp4Y" id="1aCOVac7FmM" role="3oSUPX">
-                                <ref role="cht4Q" to="tp2c:htbVj4_" resolve="ClosureLiteral" />
-                              </node>
-                              <node concept="37vLTw" id="1aCOVac7FmN" role="1m5AlR">
-                                <ref role="3cqZAo" node="1aCOVac7Fn5" resolve="arg" />
-                              </node>
-                            </node>
-                            <node concept="3Tsc0h" id="1aCOVac7FmO" role="2OqNvi">
-                              <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
-                            </node>
-                          </node>
-                          <node concept="2HwmR7" id="1aCOVac7FmP" role="2OqNvi">
-                            <node concept="1bVj0M" id="1aCOVac7FmQ" role="23t8la">
-                              <node concept="3clFbS" id="1aCOVac7FmR" role="1bW5cS">
-                                <node concept="3clFbF" id="1aCOVac7FmS" role="3cqZAp">
-                                  <node concept="1Wc70l" id="1aCOVac7FmT" role="3clFbG">
-                                    <node concept="2OqwBi" id="1aCOVac7FmU" role="3uHU7B">
-                                      <node concept="37vLTw" id="1aCOVac7FmV" role="2Oq$k0">
-                                        <ref role="3cqZAo" node="1aCOVac7Fn3" resolve="it" />
-                                      </node>
-                                      <node concept="1mIQ4w" id="1aCOVac7FmW" role="2OqNvi">
-                                        <node concept="chp4Y" id="1aCOVac7FmX" role="cj9EA">
-                                          <ref role="cht4Q" to="tpee:5B8En1ST6Bm" resolve="IInferredExpression" />
-                                        </node>
-                                      </node>
-                                    </node>
-                                    <node concept="2OqwBi" id="1aCOVac7FmY" role="3uHU7w">
-                                      <node concept="1PxgMI" id="1aCOVac7FmZ" role="2Oq$k0">
-                                        <property role="1BlNFB" value="true" />
-                                        <node concept="chp4Y" id="1aCOVac7Fn0" role="3oSUPX">
-                                          <ref role="cht4Q" to="tpee:5B8En1ST6Bm" resolve="IInferredExpression" />
-                                        </node>
-                                        <node concept="37vLTw" id="1aCOVac7Fn1" role="1m5AlR">
-                                          <ref role="3cqZAo" node="1aCOVac7Fn3" resolve="it" />
-                                        </node>
-                                      </node>
-                                      <node concept="2qgKlT" id="1aCOVac7Fn2" role="2OqNvi">
-                                        <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
-                                      </node>
-                                    </node>
-                                  </node>
-                                </node>
-                              </node>
-                              <node concept="Rh6nW" id="1aCOVac7Fn3" role="1bW2Oz">
-                                <property role="TrG5h" value="it" />
-                                <node concept="2jxLKc" id="1aCOVac7Fn4" role="1tU5fm" />
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-                            </node>
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-                            <property role="Xl_RC" value="can't infer type" />
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-                          <node concept="1mIQ4w" id="vrUbzkxz$K" role="2OqNvi">
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-                              <ref role="cht4Q" to="tpee:5B8En1ST6Bm" resolve="IInferredExpression" />
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-                        <node concept="2OqwBi" id="vrUbzkxz$M" role="3uHU7w">
-                          <node concept="1PxgMI" id="vrUbzkxz$N" role="2Oq$k0">
-                            <property role="1BlNFB" value="true" />
-                            <node concept="chp4Y" id="vrUbzkxz$O" role="3oSUPX">
-                              <ref role="cht4Q" to="tpee:5B8En1ST6Bm" resolve="IInferredExpression" />
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-                              <ref role="3cqZAo" node="vrUbzkxz$R" resolve="it" />
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-                          <node concept="2qgKlT" id="vrUbzkxz$Q" role="2OqNvi">
-                            <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
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-                  <node concept="Rh6nW" id="vrUbzkxz$R" role="1bW2Oz">
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-                    <node concept="2jxLKc" id="vrUbzkxz$S" role="1tU5fm" />
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-        <node concept="3A20r5" id="vrUbzkxyXU" role="2t_VXX">
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-        </node>
-      </node>
-    </node>
-    <node concept="1nLNMY" id="vrUbzkxEuS" role="1nK1Vg">
-      <property role="TrG5h" value="expressionStatement" />
-      <node concept="3clFbS" id="vrUbzkxEuT" role="1nLNMH">
-        <node concept="3cpWs8" id="vrUbzkxF37" role="3cqZAp">
-          <node concept="3cpWsn" id="vrUbzkxF38" role="3cpWs9">
-            <property role="TrG5h" value="bmd" />
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-              <ref role="ehGHo" to="tpee:fzclF7W" resolve="BaseMethodDeclaration" />
-            </node>
-            <node concept="1PxgMI" id="vrUbzkxF3a" role="33vP2m">
-              <property role="1BlNFB" value="true" />
-              <node concept="chp4Y" id="vrUbzkxF3b" role="3oSUPX">
-                <ref role="cht4Q" to="tpee:fzclF7W" resolve="BaseMethodDeclaration" />
-              </node>
-              <node concept="2OqwBi" id="vrUbzkxF3c" role="1m5AlR">
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-                  <ref role="3A2yKK" node="vrUbzkxEuV" resolve="es" />
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-                <node concept="2Xjw5R" id="vrUbzkxF3e" role="2OqNvi">
-                  <node concept="1xMEDy" id="vrUbzkxF3f" role="1xVPHs">
-                    <node concept="chp4Y" id="vrUbzkxF3g" role="ri$Ld">
-                      <ref role="cht4Q" to="tpee:i2fhoOR" resolve="IMethodLike" />
-                    </node>
-                  </node>
-                </node>
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="3clFbJ" id="vrUbzkxFtj" role="3cqZAp">
-          <node concept="3clFbS" id="vrUbzkxFtl" role="3clFbx">
-            <node concept="3cpWs8" id="vrUbzkxOHT" role="3cqZAp">
-              <node concept="3cpWsn" id="vrUbzkxOHU" role="3cpWs9">
-                <property role="TrG5h" value="cl" />
-                <node concept="3Tqbb2" id="vrUbzkxOHV" role="1tU5fm">
-                  <ref role="ehGHo" to="tp2c:htbVj4_" resolve="ClosureLiteral" />
-                </node>
-                <node concept="1PxgMI" id="vrUbzkxOHW" role="33vP2m">
-                  <node concept="chp4Y" id="vrUbzkxOHX" role="3oSUPX">
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-                  <node concept="2OqwBi" id="vrUbzkxOHY" role="1m5AlR">
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-                    <node concept="3TrEf2" id="vrUbzkxOI0" role="2OqNvi">
-                      <ref role="3Tt5mk" to="tpee:fzclF8k" resolve="expression" />
-                    </node>
-                  </node>
-                </node>
-              </node>
-            </node>
-            <node concept="3clFbH" id="vrUbzkxOI1" role="3cqZAp" />
-            <node concept="1nLNNL" id="vrUbzkxOI2" role="3cqZAp">
-              <node concept="1nLNMm" id="vrUbzkxOI3" role="1nLNNK">
-                <node concept="3Aq93q" id="vrUbzkxOI4" role="1nLNMb">
-                  <property role="3ArMco" value="true" />
-                  <node concept="3I6sU6" id="vrUbzkxOI5" role="3Ip0Jz">
-                    <node concept="3I6s7M" id="vrUbzkxOI6" role="3I6sU7">
-                      <node concept="3Aqt3T" id="vrUbzkxOI7" role="3I6s78">
-                        <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
-                        <node concept="37jhX" id="vrUbzkxOI8" role="3AunhB">
-                          <node concept="2OqwBi" id="vrUbzkxOI9" role="37jj2">
-                            <node concept="3A2sRY" id="vrUbzkxOIa" role="2Oq$k0">
-                              <ref role="3A2yKK" node="vrUbzkxEuV" resolve="es" />
-                            </node>
-                            <node concept="3TrEf2" id="vrUbzkxOIb" role="2OqNvi">
-                              <ref role="3Tt5mk" to="tpee:fzclF8k" resolve="expression" />
-                            </node>
-                          </node>
-                        </node>
-                        <node concept="a7P8L" id="vrUbzkxOIc" role="3AunhB">
-                          <ref role="a7OzE" node="vrUbzkxOIl" resolve="DeclType" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3Aq93q" id="vrUbzkxOId" role="1nLNMb">
-                  <node concept="3I6sU6" id="vrUbzkxOIe" role="3Ip0Jz">
-                    <node concept="3I6s7M" id="vrUbzkxOIf" role="3I6sU7">
-                      <node concept="3Aqt3T" id="vrUbzkxOIg" role="3I6s78">
-                        <ref role="3AqCNq" node="vrUbzkloEo" resolve="typeScheme" />
-                        <node concept="37jhX" id="vrUbzkxOIh" role="3AunhB">
-                          <node concept="37vLTw" id="vrUbzkxOIi" role="37jj2">
-                            <ref role="3cqZAo" node="vrUbzkxOHU" resolve="cl" />
-                          </node>
-                        </node>
-                        <node concept="a7P8L" id="vrUbzkxOIj" role="3AunhB">
-                          <ref role="a7OzE" node="vrUbzkxOIo" resolve="TypeSc" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3NuqgR" id="vrUbzkxOIk" role="0Rg$4">
-                  <node concept="aZer4" id="vrUbzkxOIl" role="3XD1gS">
-                    <property role="TrG5h" value="DeclType" />
-                  </node>
-                  <node concept="32pEOW" id="vrUbzkxOIm" role="3vLBG7" />
-                </node>
-                <node concept="3NuqgR" id="vrUbzkxOIn" role="0Rg$4">
-                  <node concept="aZer4" id="vrUbzkxOIo" role="3XD1gS">
-                    <property role="TrG5h" value="TypeSc" />
-                  </node>
-                  <node concept="32pEOW" id="vrUbzkxOIp" role="3vLBG7" />
-                </node>
-                <node concept="3xSepi" id="vrUbzkxOIq" role="3xSepv">
-                  <node concept="3Aq9E8" id="vrUbzkxOIr" role="3xSepj">
-                    <node concept="3I6sU6" id="vrUbzkxOIs" role="3Ip0Jz">
-                      <node concept="3I6s7M" id="vrUbzkxOIt" role="3I6sU7">
-                        <node concept="3jbYBd" id="vrUbzkxOIu" role="3I6s78">
-                          <ref role="3jbY9l" to="kqnc:5itBwMau8m1" resolve="lift" />
-                          <node concept="2OqwBi" id="vrUbzkxOIv" role="3jbY8P">
-                            <node concept="1PxgMI" id="vrUbzkxOIw" role="2Oq$k0">
-                              <node concept="chp4Y" id="vrUbzkxOIx" role="3oSUPX">
-                                <ref role="cht4Q" to="tpee:fzclF7W" resolve="BaseMethodDeclaration" />
-                              </node>
-                              <node concept="37vLTw" id="vrUbzkxOIy" role="1m5AlR">
-                                <ref role="3cqZAo" node="vrUbzkxF38" resolve="bmd" />
-                              </node>
-                            </node>
-                            <node concept="3TrEf2" id="vrUbzkxOIz" role="2OqNvi">
-                              <ref role="3Tt5mk" to="tpee:fzclF7X" resolve="returnType" />
-                            </node>
-                          </node>
-                          <node concept="a7P8L" id="vrUbzkxOI$" role="3jbY8V">
-                            <ref role="a7OzE" node="vrUbzkxOIl" resolve="DeclType" />
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="3I6s7M" id="vrUbzkxOI_" role="3I6sU7">
-                        <node concept="3Aqt3T" id="vrUbzkxOIA" role="3I6s78">
-                          <ref role="3AqCNq" to="kqnc:3vTJNooZDgN" resolve="convertsTo" />
-                          <node concept="a7P8L" id="vrUbzkxOIB" role="3AunhB">
-                            <ref role="a7OzE" node="vrUbzkxOIo" resolve="TypeSc" />
-                          </node>
-                          <node concept="a7P8L" id="vrUbzkxOIC" role="3AunhB">
-                            <ref role="a7OzE" node="vrUbzkxOIl" resolve="DeclType" />
-                          </node>
-                          <node concept="37jhX" id="vrUbzkxOID" role="3AunhB">
-                            <node concept="2YIFZM" id="vrUbzkxOIE" role="37jj2">
-                              <ref role="37wK5l" to="kqnc:6GOqnFkHi03" resolve="assignmentContext" />
-                              <ref role="1Pybhc" to="kqnc:4O7HczOeKN2" resolve="ConvertsContext" />
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3xSepi" id="vrUbzkxOIF" role="3xSepv">
-                  <node concept="3Aq9E8" id="vrUbzkxOIG" role="3xSepj">
-                    <node concept="3I6sU6" id="vrUbzkxOIH" role="3Ip0Jz">
-                      <node concept="3I6s7M" id="vrUbzkxOII" role="3I6sU7">
-                        <node concept="1lHd6T" id="vrUbzkxOIJ" role="3I6s78">
-                          <property role="1lHdp1" value="4jcOV4hu0n_/ERROR" />
-                          <node concept="Xl_RD" id="vrUbzkxOIK" role="1ljv2e">
-                            <property role="Xl_RC" value="can't infer type" />
-                          </node>
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
-            </node>
-            <node concept="3clFbH" id="vrUbzkxFtk" role="3cqZAp" />
-          </node>
-          <node concept="1Wc70l" id="vrUbzkxLU1" role="3clFbw">
-            <node concept="1Wc70l" id="vrUbzkxIhS" role="3uHU7B">
-              <node concept="2OqwBi" id="vrUbzkxJ3f" role="3uHU7B">
-                <node concept="37vLTw" id="vrUbzkxI_n" role="2Oq$k0">
-                  <ref role="3cqZAo" node="vrUbzkxF38" resolve="bmd" />
-                </node>
-                <node concept="3x8VRR" id="vrUbzkxK3D" role="2OqNvi" />
-              </node>
-              <node concept="17R0WA" id="vrUbzkxFRq" role="3uHU7w">
-                <node concept="3A2sRY" id="vrUbzkxFtG" role="3uHU7B">
-                  <ref role="3A2yKK" node="vrUbzkxEuV" resolve="es" />
-                </node>
-                <node concept="2OqwBi" id="vrUbzkxHs8" role="3uHU7w">
-                  <node concept="37vLTw" id="vrUbzkxGGY" role="2Oq$k0">
-                    <ref role="3cqZAo" node="vrUbzkxF38" resolve="bmd" />
-                  </node>
-                  <node concept="2qgKlT" id="vrUbzkxKrU" role="2OqNvi">
-                    <ref role="37wK5l" to="tpek:i2fhS7A" resolve="getLastStatement" />
-                  </node>
-                </node>
-              </node>
-            </node>
-            <node concept="2OqwBi" id="vrUbzkxMeB" role="3uHU7w">
-              <node concept="2OqwBi" id="vrUbzkxMeC" role="2Oq$k0">
-                <node concept="1PxgMI" id="vrUbzkxMeD" role="2Oq$k0">
-                  <property role="1BlNFB" value="true" />
-                  <node concept="chp4Y" id="vrUbzkxMeE" role="3oSUPX">
-                    <ref role="cht4Q" to="tp2c:htbVj4_" resolve="ClosureLiteral" />
-                  </node>
-                  <node concept="2OqwBi" id="vrUbzkxMeF" role="1m5AlR">
-                    <node concept="3A2sRY" id="vrUbzkxMeG" role="2Oq$k0">
-                      <ref role="3A2yKK" node="vrUbzkxEuV" resolve="es" />
-                    </node>
-                    <node concept="3TrEf2" id="vrUbzkxMeH" role="2OqNvi">
-                      <ref role="3Tt5mk" to="tpee:fzclF8k" resolve="expression" />
-                    </node>
-                  </node>
-                </node>
-                <node concept="3Tsc0h" id="vrUbzkxMeI" role="2OqNvi">
-                  <ref role="3TtcxE" to="tp2c:htbW2KO" resolve="parameter" />
-                </node>
-              </node>
-              <node concept="2HwmR7" id="vrUbzkxMeJ" role="2OqNvi">
-                <node concept="1bVj0M" id="vrUbzkxMeK" role="23t8la">
-                  <node concept="3clFbS" id="vrUbzkxMeL" role="1bW5cS">
-                    <node concept="3clFbF" id="vrUbzkxMeM" role="3cqZAp">
-                      <node concept="1Wc70l" id="vrUbzkxMeN" role="3clFbG">
-                        <node concept="2OqwBi" id="vrUbzkxMeO" role="3uHU7B">
-                          <node concept="37vLTw" id="vrUbzkxMeP" role="2Oq$k0">
-                            <ref role="3cqZAo" node="vrUbzkxMeX" resolve="it" />
-                          </node>
-                          <node concept="1mIQ4w" id="vrUbzkxMeQ" role="2OqNvi">
-                            <node concept="chp4Y" id="vrUbzkxMeR" role="cj9EA">
-                              <ref role="cht4Q" to="tpee:5B8En1ST6Bm" resolve="IInferredExpression" />
-                            </node>
-                          </node>
-                        </node>
-                        <node concept="2OqwBi" id="vrUbzkxMeS" role="3uHU7w">
-                          <node concept="1PxgMI" id="vrUbzkxMeT" role="2Oq$k0">
-                            <property role="1BlNFB" value="true" />
-                            <node concept="chp4Y" id="vrUbzkxMeU" role="3oSUPX">
-                              <ref role="cht4Q" to="tpee:5B8En1ST6Bm" resolve="IInferredExpression" />
-                            </node>
-                            <node concept="37vLTw" id="vrUbzkxMeV" role="1m5AlR">
-                              <ref role="3cqZAo" node="vrUbzkxMeX" resolve="it" />
-                            </node>
-                          </node>
-                          <node concept="2qgKlT" id="vrUbzkxMeW" role="2OqNvi">
-                            <ref role="37wK5l" to="tpek:Q$FjPqwIoN" resolve="needInference" />
-                          </node>
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                  <node concept="Rh6nW" id="vrUbzkxMeX" role="1bW2Oz">
-                    <property role="TrG5h" value="it" />
-                    <node concept="2jxLKc" id="vrUbzkxMeY" role="1tU5fm" />
-                  </node>
-                </node>
-              </node>
-            </node>
-          </node>
-        </node>
-      </node>
-      <node concept="2t___k" id="vrUbzkxEuU" role="1nLNMg">
-        <ref role="2t_S0q" to="tpee:fzclF8j" resolve="ExpressionStatement" />
-        <node concept="3A20r5" id="vrUbzkxEuV" role="2t_VXX">
-          <property role="TrG5h" value="es" />
-        </node>
-      </node>
-    </node>
-  </node>
   <node concept="AVZre" id="554EtBHza_r">
     <property role="3GE5qa" value="rule" />
     <property role="TrG5h" value="ClosureParamInference" />
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.collectionsExt/models/jetbrains.mps.baseLanguage.collectionsExt.types.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.collectionsExt/models/jetbrains.mps.baseLanguage.collectionsExt.types.mps
index 009d07c4..d6f88116 100644
--- a/samples/mpscore/languages/jetbrains.mps.baseLanguage.collectionsExt/models/jetbrains.mps.baseLanguage.collectionsExt.types.mps
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.collectionsExt/models/jetbrains.mps.baseLanguage.collectionsExt.types.mps
@@ -44,9 +44,6 @@
       <concept id="1070475926800" name="jetbrains.mps.baseLanguage.structure.StringLiteral" flags="nn" index="Xl_RD">
         <property id="1070475926801" name="value" index="Xl_RC" />
       </concept>
-      <concept id="1081236700937" name="jetbrains.mps.baseLanguage.structure.StaticMethodCall" flags="nn" index="2YIFZM">
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@@ -23524,2428 +23521,5 @@
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-                                <node concept="2YIFZM" id="vrUbzk_nMv" role="37jj2">
-                                  <ref role="37wK5l" to="kqnc:6GOqnFkHsLx" resolve="invocationContext" />
-                                  <ref role="1Pybhc" to="kqnc:4O7HczOeKN2" resolve="ConvertsContext" />
-                                </node>
-                              </node>
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3Aq93q" id="vrUbzk_ntX" role="1nLNMb">
-                  <property role="3ArMco" value="true" />
-                  <node concept="3I6sU6" id="vrUbzk_ntY" role="3Ip0Jz">
-                    <node concept="3I6s7M" id="vrUbzk_ntZ" role="3I6sU7">
-                      <node concept="3Aqt3T" id="vrUbzk_nu0" role="3I6s78">
-                        <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
-                        <node concept="37jhX" id="vrUbzk_nu1" role="3AunhB">
-                          <node concept="2OqwBi" id="vrUbzk_nu2" role="37jj2">
-                            <node concept="3A2sRY" id="vrUbzk_nu3" role="2Oq$k0">
-                              <ref role="3A2yKK" node="vrUbzk_lUm" resolve="op" />
-                            </node>
-                            <node concept="2qgKlT" id="vrUbzk_nu4" role="2OqNvi">
-                              <ref role="37wK5l" to="tpek:hEwIP$m" resolve="getOperand" />
-                            </node>
-                          </node>
-                        </node>
-                        <node concept="a7P8L" id="vrUbzk_nu5" role="3AunhB">
-                          <ref role="a7OzE" node="vrUbzk_nue" resolve="Operand" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3Aq93q" id="vrUbzk_nu6" role="1nLNMb">
-                  <node concept="3I6sU6" id="vrUbzk_nu7" role="3Ip0Jz">
-                    <node concept="3I6s7M" id="vrUbzk_nu8" role="3I6sU7">
-                      <node concept="3Aqt3T" id="vrUbzk_nu9" role="3I6s78">
-                        <ref role="3AqCNq" to="e9ez:vrUbzkloEo" resolve="typeScheme" />
-                        <node concept="37jhX" id="vrUbzk_nua" role="3AunhB">
-                          <node concept="37vLTw" id="vrUbzk_nub" role="37jj2">
-                            <ref role="3cqZAo" node="vrUbzk_ntp" resolve="closureArg" />
-                          </node>
-                        </node>
-                        <node concept="a7P8L" id="vrUbzk_nuc" role="3AunhB">
-                          <ref role="a7OzE" node="vrUbzk_nuf" resolve="TypeSc" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3NuqgR" id="vrUbzk_nud" role="0Rg$4">
-                  <node concept="aZer4" id="vrUbzk_nue" role="3XD1gS">
-                    <property role="TrG5h" value="Operand" />
-                  </node>
-                  <node concept="aZer4" id="vrUbzk_nuf" role="3XD1gS">
-                    <property role="TrG5h" value="TypeSc" />
-                  </node>
-                  <node concept="aZer4" id="vrUbzk_nuh" role="3XD1gS">
-                    <property role="TrG5h" value="Seq" />
-                  </node>
-                  <node concept="aZer4" id="vrUbzk_nui" role="3XD1gS">
-                    <property role="TrG5h" value="Elem" />
-                  </node>
-                  <node concept="32pEOW" id="vrUbzk_nuk" role="3vLBG7" />
-                </node>
-              </node>
-            </node>
-          </node>
-          <node concept="37vLTw" id="1aCOVabTQji" role="3Hbm9W">
-            <ref role="3cqZAo" node="vrUbzk_ntp" resolve="closureArg" />
-          </node>
-        </node>
-      </node>
-      <node concept="2t___k" id="vrUbzk_lUl" role="1nLNMg">
-        <ref role="2t_S0q" to="tp2q:hyes0KL" resolve="VisitAllOperation" />
-        <node concept="3A20r5" id="vrUbzk_lUm" role="2t_VXX">
-          <property role="TrG5h" value="op" />
-        </node>
-      </node>
-    </node>
-    <node concept="1nLNMY" id="vrUbzk_pzm" role="1nK1Vg">
-      <property role="TrG5h" value="typeScheme_whereOperation" />
-      <node concept="3clFbS" id="vrUbzk_pzn" role="1nLNMH">
-        <node concept="3cpWs8" id="vrUbzk_rdu" role="3cqZAp">
-          <node concept="3cpWsn" id="vrUbzk_rdv" role="3cpWs9">
-            <property role="TrG5h" value="closureArg" />
-            <node concept="3Tqbb2" id="vrUbzk_rdw" role="1tU5fm" />
-            <node concept="2OqwBi" id="vrUbzk_rdx" role="33vP2m">
-              <node concept="3A2sRY" id="vrUbzk_rdy" role="2Oq$k0">
-                <ref role="3A2yKK" node="vrUbzk_pzp" resolve="op" />
-              </node>
-              <node concept="3TrEf2" id="vrUbzk_rdz" role="2OqNvi">
-                <ref role="3Tt5mk" to="tp2q:hvzZnvH" resolve="filter" />
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="3clFbH" id="vrUbzk_rd$" role="3cqZAp" />
-        <node concept="3Hbl2A" id="1aCOVabTQwI" role="3cqZAp">
-          <node concept="3clFbS" id="1aCOVabTQwK" role="9aQI4">
-            <node concept="1nLNNL" id="vrUbzk_rd_" role="3cqZAp">
-              <node concept="1nLNMm" id="vrUbzk_rdA" role="1nLNNK">
-                <node concept="3xSepi" id="vrUbzk_rdB" role="3xSepv">
-                  <node concept="3Aq9E8" id="vrUbzk_rdC" role="3xSepj">
-                    <node concept="3I6sU6" id="vrUbzk_rdD" role="3Ip0Jz">
-                      <node concept="3IrJb3" id="vrUbzk_rdE" role="3I6sU7">
-                        <node concept="3clFbS" id="vrUbzk_rdF" role="3IrJb0">
-                          <node concept="3Aqczg" id="vrUbzk_rdG" role="3cqZAp">
-                            <node concept="3jm4v3" id="vrUbzk_rdH" role="3Aqpz8">
-                              <ref role="3jm46O" node="31ObkDZ_dsf" resolve="operandTypeSequence" />
-                              <node concept="3A2sRY" id="vrUbzk_rdI" role="3jicU7">
-                                <ref role="3A2yKK" node="vrUbzk_pzp" resolve="op" />
-                              </node>
-                              <node concept="a7P8L" id="vrUbzk_rdJ" role="3jm6SO">
-                                <ref role="a7OzE" node="vrUbzk_rej" resolve="Operand" />
-                              </node>
-                              <node concept="a7P8L" id="vrUbzk_rdK" role="3jm6SO">
-                                <ref role="a7OzE" node="vrUbzk_rem" resolve="Seq" />
-                              </node>
-                              <node concept="a7P8L" id="vrUbzk_rdL" role="3jm6SO">
-                                <ref role="a7OzE" node="vrUbzk_ren" resolve="Elem" />
-                              </node>
-                            </node>
-                          </node>
-                          <node concept="3Aqczg" id="vrUbzk_ryI" role="3cqZAp">
-                            <node concept="3Aqt3T" id="vrUbzk_ryJ" role="3Aqpz8">
-                              <ref role="3AqCNq" to="kqnc:3vTJNooZDgN" resolve="convertsTo" />
-                              <node concept="a7P8L" id="vrUbzk_ryK" role="3AunhB">
-                                <ref role="a7OzE" node="vrUbzk_rek" resolve="TypeSc" />
-                              </node>
-                              <node concept="ns1u0" id="vrUbzk_ryL" role="3AunhB">
-                                <ref role="ns1xF" to="fa4b:6$MmqWflYd6" resolve="function" />
-                                <node concept="nsMwS" id="vrUbzk_ryM" role="ns1xD">
-                                  <ref role="nsMwP" to="fa4b:6$MmqWflYdg" resolve="result" />
-                                  <node concept="ns1u0" id="vrUbzk_ryN" role="iSaTp">
-                                    <ref role="ns1xF" to="kqnc:4lCLOtwq2MF" resolve="type" />
-                                  </node>
-                                </node>
-                                <node concept="nsMwS" id="vrUbzk_ryO" role="ns1xD">
-                                  <ref role="nsMwP" to="fa4b:6$MmqWflYdw" resolve="params" />
-                                  <node concept="Hz6ka" id="1aCOVabPBR7" role="iSaTp">
-                                    <node concept="KCUsM" id="1aCOVabPBR8" role="Hz6kd">
-                                      <node concept="3wAshV" id="1aCOVabPBR9" role="KCVpo">
-                                        <node concept="a7P8L" id="1aCOVabPBRa" role="3wAq21">
-                                          <ref role="a7OzE" node="vrUbzk_ren" resolve="Elem" />
-                                        </node>
-                                      </node>
-                                    </node>
-                                  </node>
-                                </node>
-                              </node>
-                              <node concept="37jhX" id="vrUbzk_ryQ" role="3AunhB">
-                                <node concept="2YIFZM" id="vrUbzk_ryR" role="37jj2">
-                                  <ref role="37wK5l" to="kqnc:6GOqnFkHsLx" resolve="invocationContext" />
-                                  <ref role="1Pybhc" to="kqnc:4O7HczOeKN2" resolve="ConvertsContext" />
-                                </node>
-                              </node>
-                            </node>
-                          </node>
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3Aq93q" id="vrUbzk_re2" role="1nLNMb">
-                  <property role="3ArMco" value="true" />
-                  <node concept="3I6sU6" id="vrUbzk_re3" role="3Ip0Jz">
-                    <node concept="3I6s7M" id="vrUbzk_re4" role="3I6sU7">
-                      <node concept="3Aqt3T" id="vrUbzk_re5" role="3I6s78">
-                        <ref role="3AqCNq" to="kqnc:34$A1MfhdDv" resolve="typeOf" />
-                        <node concept="37jhX" id="vrUbzk_re6" role="3AunhB">
-                          <node concept="2OqwBi" id="vrUbzk_re7" role="37jj2">
-                            <node concept="3A2sRY" id="vrUbzk_re8" role="2Oq$k0">
-                              <ref role="3A2yKK" node="vrUbzk_pzp" resolve="op" />
-                            </node>
-                            <node concept="2qgKlT" id="vrUbzk_re9" role="2OqNvi">
-                              <ref role="37wK5l" to="tpek:hEwIP$m" resolve="getOperand" />
-                            </node>
-                          </node>
-                        </node>
-                        <node concept="a7P8L" id="vrUbzk_rea" role="3AunhB">
-                          <ref role="a7OzE" node="vrUbzk_rej" resolve="Operand" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3Aq93q" id="vrUbzk_reb" role="1nLNMb">
-                  <node concept="3I6sU6" id="vrUbzk_rec" role="3Ip0Jz">
-                    <node concept="3I6s7M" id="vrUbzk_red" role="3I6sU7">
-                      <node concept="3Aqt3T" id="vrUbzk_ree" role="3I6s78">
-                        <ref role="3AqCNq" to="e9ez:vrUbzkloEo" resolve="typeScheme" />
-                        <node concept="37jhX" id="vrUbzk_ref" role="3AunhB">
-                          <node concept="37vLTw" id="vrUbzk_reg" role="37jj2">
-                            <ref role="3cqZAo" node="vrUbzk_rdv" resolve="closureArg" />
-                          </node>
-                        </node>
-                        <node concept="a7P8L" id="vrUbzk_reh" role="3AunhB">
-                          <ref role="a7OzE" node="vrUbzk_rek" resolve="TypeSc" />
-                        </node>
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="3NuqgR" id="vrUbzk_rei" role="0Rg$4">
-                  <node concept="aZer4" id="vrUbzk_rej" role="3XD1gS">
-                    <property role="TrG5h" value="Operand" />
-                  </node>
-                  <node concept="aZer4" id="vrUbzk_rek" role="3XD1gS">
-                    <property role="TrG5h" value="TypeSc" />
-                  </node>
-                  <node concept="aZer4" id="vrUbzk_rem" role="3XD1gS">
-                    <property role="TrG5h" value="Seq" />
-                  </node>
-                  <node concept="aZer4" id="vrUbzk_ren" role="3XD1gS">
-                    <property role="TrG5h" value="Elem" />
-                  </node>
-                  <node concept="32pEOW" id="vrUbzk_rep" role="3vLBG7" />
-                </node>
-              </node>
-            </node>
-          </node>
-          <node concept="37vLTw" id="1aCOVabTQyH" role="3Hbm9W">
-            <ref role="3cqZAo" node="vrUbzk_rdv" resolve="closureArg" />
-          </node>
-        </node>
-      </node>
-      <node concept="2t___k" id="vrUbzk_pzo" role="1nLNMg">
-        <ref role="2t_S0q" to="tp2q:hvzZkn4" resolve="WhereOperation" />
-        <node concept="3A20r5" id="vrUbzk_pzp" role="2t_VXX">
-          <property role="TrG5h" value="op" />
-        </node>
-      </node>
-    </node>
-  </node>
 </model>