diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguageExt/models/jetbrains.mps.baseLanguageExt.types.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguageExt/models/jetbrains.mps.baseLanguageExt.types.mps
index cd80b8f5..7b2086fa 100644
--- a/samples/mpscore/languages/jetbrains.mps.baseLanguageExt/models/jetbrains.mps.baseLanguageExt.types.mps
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguageExt/models/jetbrains.mps.baseLanguageExt.types.mps
@@ -617,7 +617,6 @@
       <concept id="1225727723840" name="jetbrains.mps.baseLanguage.collections.structure.FindFirstOperation" flags="nn" index="1z4cxt" />
       <concept id="1202120902084" name="jetbrains.mps.baseLanguage.collections.structure.WhereOperation" flags="nn" index="3zZkjj" />
       <concept id="1202128969694" name="jetbrains.mps.baseLanguage.collections.structure.SelectOperation" flags="nn" index="3$u5V9" />
-      <concept id="1184963466173" name="jetbrains.mps.baseLanguage.collections.structure.ToArrayOperation" flags="nn" index="3_kTaI" />
       <concept id="9042586985346099698" name="jetbrains.mps.baseLanguage.collections.structure.MultiForEachStatement" flags="nn" index="1_o_46">
         <child id="9042586985346099734" name="forEach" index="1_o_by" />
       </concept>
@@ -2947,20 +2946,6 @@
   <node concept="AVZre" id="5MHpiylysUh">
     <property role="TrG5h" value="SubclassPaths" />
     <property role="3GE5qa" value="rule.relation" />
-    <node concept="3AqmO8" id="2rIdnPuJSDR" role="8PkJo">
-      <property role="TrG5h" value="subclassPathsRaw" />
-      <node concept="1zAUYm" id="2rIdnPuJSDW" role="1zAUyy">
-        <property role="TrG5h" value="paths" />
-      </node>
-      <node concept="1zAUYm" id="2rIdnPuJSDY" role="1zAUyy">
-        <property role="TrG5h" value="clsType" />
-      </node>
-      <node concept="1zAsnw" id="2rIdnPuJSE1" role="lGtFl">
-        <node concept="3SKdUq" id="2rIdnPuJSE2" role="27qylF">
-          <property role="3SKdUp" value="yields a list of &quot;subclassing paths&quot; with raw classifier values, which all originate at classifier and go up to Object" />
-        </node>
-      </node>
-    </node>
     <node concept="3AqmO8" id="1qY0I4bFlcz" role="8PkJo">
       <property role="TrG5h" value="subclassPaths" />
       <node concept="1zAUYm" id="1qY0I4bFlc$" role="1zAUyy">
@@ -3482,253 +3467,6 @@
         </node>
       </node>
     </node>
-    <node concept="1nLNMY" id="1qY0I4bFAi4" role="1nK1Vg">
-      <property role="TrG5h" value="findSubclassPathsRawValues_Classifier" />
-      <node concept="3clFbS" id="1qY0I4bFAi5" role="1nLNMH">
-        <node concept="3cpWs8" id="1qY0I4bFAi6" role="3cqZAp">
-          <node concept="3cpWsn" id="1qY0I4bFAi7" role="3cpWs9">
-            <property role="TrG5h" value="subtypePaths" />
-            <node concept="_YKpA" id="1qY0I4bFAi8" role="1tU5fm">
-              <node concept="_YKpA" id="1qY0I4bFAi9" role="_ZDj9">
-                <node concept="3Tqbb2" id="1qY0I4bFAia" role="_ZDj9">
-                  <ref role="ehGHo" to="tpee:g7uibYu" resolve="ClassifierType" />
-                </node>
-              </node>
-            </node>
-            <node concept="2YIFZM" id="1qY0I4bFAib" role="33vP2m">
-              <ref role="37wK5l" to="hano:2tjs8VC2Blb" resolve="getOrPut" />
-              <ref role="1Pybhc" to="hano:2tjs8VC0K0m" resolve="Memoizer" />
-              <node concept="3A2sRY" id="1qY0I4bFAic" role="37wK5m">
-                <ref role="3A2yKK" node="1qY0I4bFAjD" resolve="cls" />
-              </node>
-              <node concept="1bVj0M" id="1qY0I4bFAid" role="37wK5m">
-                <node concept="3clFbS" id="1qY0I4bFAie" role="1bW5cS">
-                  <node concept="3clFbF" id="1qY0I4bFAif" role="3cqZAp">
-                    <node concept="2YIFZM" id="1qY0I4bFAig" role="3clFbG">
-                      <ref role="37wK5l" node="5H6hZahiCgu" resolve="allSubtypePathsTo" />
-                      <ref role="1Pybhc" node="tIwzd2cJHD" resolve="SubclassingUtil" />
-                      <node concept="3A2sRY" id="1qY0I4bFAih" role="37wK5m">
-                        <ref role="3A2yKK" node="1qY0I4bFAjD" resolve="cls" />
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="Oftf1" id="1qY0I4bFAii" role="3cqZAp">
-          <node concept="2OqwBi" id="1qY0I4bFAij" role="Oftjs">
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-              <node concept="3A2sRY" id="1qY0I4bFAil" role="2Oq$k0">
-                <ref role="3A2yKK" node="1qY0I4bFAjD" resolve="cls" />
-              </node>
-              <node concept="2qgKlT" id="1qY0I4bFAim" role="2OqNvi">
-                <ref role="37wK5l" to="tpek:1UeCwxlWKny" resolve="getExtendedClassifierTypes" />
-              </node>
-            </node>
-            <node concept="3$u5V9" id="1qY0I4bFAin" role="2OqNvi">
-              <node concept="1bVj0M" id="1qY0I4bFAio" role="23t8la">
-                <node concept="3clFbS" id="1qY0I4bFAip" role="1bW5cS">
-                  <node concept="3clFbF" id="1qY0I4bFAiq" role="3cqZAp">
-                    <node concept="2OqwBi" id="1qY0I4bFAir" role="3clFbG">
-                      <node concept="37vLTw" id="1qY0I4bFAis" role="2Oq$k0">
-                        <ref role="3cqZAo" node="1qY0I4bFAiu" resolve="it" />
-                      </node>
-                      <node concept="3TrEf2" id="1qY0I4bFAit" role="2OqNvi">
-                        <ref role="3Tt5mk" to="tpee:g7uigIF" resolve="classifier" />
-                      </node>
-                    </node>
-                  </node>
-                </node>
-                <node concept="Rh6nW" id="1qY0I4bFAiu" role="1bW2Oz">
-                  <property role="TrG5h" value="it" />
-                  <node concept="2jxLKc" id="1qY0I4bFAiv" role="1tU5fm" />
-                </node>
-              </node>
-            </node>
-          </node>
-        </node>
-        <node concept="3clFbH" id="1qY0I4bFAiw" role="3cqZAp" />
-        <node concept="1nLNNL" id="1qY0I4bFAix" role="3cqZAp">
-          <node concept="1nLNMm" id="1qY0I4bFAiy" role="1nLNNK">
-            <node concept="3Aq93q" id="1qY0I4bFAiB" role="1nLNMb">
-              <property role="3ArMco" value="false" />
-              <node concept="3I6sU6" id="1qY0I4bFAiC" role="3Ip0Jz">
-                <node concept="3I6s7M" id="1qY0I4bFAiD" role="3I6sU7">
-                  <node concept="3Aqt3T" id="1qY0I4bFAiE" role="3I6s78">
-                    <ref role="3AqCNq" node="2rIdnPuJSDR" resolve="subclassPathsRaw" />
-                    <node concept="a7P8L" id="1qY0I4bFAiF" role="3AunhB">
-                      <ref role="a7OzE" node="1qY0I4bFAi_" resolve="Paths" />
-                    </node>
-                    <node concept="1HFMs5" id="1qY0I4bFAiG" role="3AunhB">
-                      <node concept="ns1u0" id="1qY0I4bFAiH" role="1uarlW">
-                        <ref role="ns1xF" node="JOGAOsVt2a" resolve="classifier" />
-                        <node concept="nsMwS" id="1qY0I4bFAiI" role="ns1xD">
-                          <ref role="nsMwP" node="JOGAOsVt2c" resolve="classifier" />
-                          <node concept="2OqwBi" id="1qY0I4bFAiJ" role="nsMwV">
-                            <node concept="3A2sRY" id="1qY0I4bFAiK" role="2Oq$k0">
-                              <ref role="3A2yKK" node="1qY0I4bFAjD" resolve="cls" />
-                            </node>
-                            <node concept="iZEcu" id="1qY0I4bFAiL" role="2OqNvi" />
-                          </node>
-                        </node>
-                      </node>
-                      <node concept="a7P8L" id="1qY0I4bFAiM" role="1uarlU">
-                        <ref role="a7OzE" node="1qY0I4bFAiA" resolve="ClsType" />
-                      </node>
-                    </node>
-                  </node>
-                </node>
-              </node>
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-            <node concept="3NuqgR" id="1qY0I4bFAi$" role="0Rg$4">
-              <node concept="aZer4" id="1qY0I4bFAi_" role="3XD1gS">
-                <property role="TrG5h" value="Paths" />
-              </node>
-              <node concept="aZer4" id="1qY0I4bFAiA" role="3XD1gS">
-                <property role="TrG5h" value="ClsType" />
-              </node>
-              <node concept="32pEOW" id="24ciDNzxNBv" role="3vLBG7" />
-            </node>
-            <node concept="3xSepi" id="6E2cNicdihN" role="3xSepv">
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-                      <node concept="3Hbl2A" id="FSRqrndJ2m" role="3cqZAp">
-                        <node concept="3clFbS" id="FSRqrndJ2o" role="9aQI4">
-                          <node concept="3cpWs8" id="1qY0I4bFAiR" role="3cqZAp">
-                            <node concept="3cpWsn" id="1qY0I4bFAiS" role="3cpWs9">
-                              <property role="TrG5h" value="paths" />
-                              <node concept="_YKpA" id="1qY0I4bFAiT" role="1tU5fm">
-                                <node concept="3uibUv" id="1qY0I4bFAiU" role="_ZDj9">
-                                  <ref role="3uigEE" to="6exd:1bm7a6EXvsP" resolve="DataForm" />
-                                </node>
-                              </node>
-                              <node concept="2ShNRf" id="1qY0I4bFAiV" role="33vP2m">
-                                <node concept="Tc6Ow" id="1qY0I4bFAiW" role="2ShVmc">
-                                  <node concept="3uibUv" id="1qY0I4bFAiX" role="HW$YZ">
-                                    <ref role="3uigEE" to="6exd:1bm7a6EXvsP" resolve="DataForm" />
-                                  </node>
-                                </node>
-                              </node>
-                            </node>
-                          </node>
-                          <node concept="2Gpval" id="1qY0I4bFAiY" role="3cqZAp">
-                            <node concept="2GrKxI" id="1qY0I4bFAiZ" role="2Gsz3X">
-                              <property role="TrG5h" value="sp" />
-                            </node>
-                            <node concept="37vLTw" id="1qY0I4bFAj0" role="2GsD0m">
-                              <ref role="3cqZAo" node="1qY0I4bFAi7" resolve="subtypePaths" />
-                            </node>
-                            <node concept="3clFbS" id="1qY0I4bFAj1" role="2LFqv$">
-                              <node concept="3cpWs8" id="1qY0I4bFAj2" role="3cqZAp">
-                                <node concept="3cpWsn" id="1qY0I4bFAj3" role="3cpWs9">
-                                  <property role="TrG5h" value="terms" />
-                                  <node concept="A3Dl8" id="1qY0I4bFAj4" role="1tU5fm">
-                                    <node concept="3uibUv" id="1qY0I4bFAj5" role="A3Ik2">
-                                      <ref role="3uigEE" to="6exd:1bm7a6EXvsP" resolve="DataForm" />
-                                    </node>
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-                                      <ref role="2Gs0qQ" node="1qY0I4bFAiZ" resolve="sp" />
-                                    </node>
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-                                                <ref role="3uigEE" to="6exd:1bm7a6EXvsP" resolve="DataForm" />
-                                              </node>
-                                              <node concept="1oi1Uc" id="1qY0I4bFAje" role="10QFUP">
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-                                                          <ref role="3cqZAo" node="1qY0I4bFAjm" resolve="type" />
-                                                        </node>
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-                                                          <ref role="3Tt5mk" to="tpee:g7uigIF" resolve="classifier" />
-                                                        </node>
-                                                      </node>
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-                                        <node concept="Rh6nW" id="1qY0I4bFAjm" role="1bW2Oz">
-                                          <property role="TrG5h" value="type" />
-                                          <node concept="2jxLKc" id="1qY0I4bFAjn" role="1tU5fm" />
-                                        </node>
-                                      </node>
-                                    </node>
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-                                  <node concept="TSZUe" id="1qY0I4bFAjr" role="2OqNvi">
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-                                      <ref role="37wK5l" to="6exd:1OShD0HS45f" resolve="createList" />
-                                      <ref role="1Pybhc" to="6exd:3OPtF03lco4" resolve="ListNode" />
-                                      <node concept="2OqwBi" id="1qY0I4bFAjt" role="37wK5m">
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-                              <node concept="a7P8L" id="1qY0I4bFAjy" role="3A8wtg">
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-                              <node concept="HKQnh" id="1qY0I4bFAjz" role="3A8w4Q">
-                                <node concept="2YIFZM" id="1qY0I4bFAj$" role="HKQng">
-                                  <ref role="1Pybhc" to="6exd:3OPtF03lco4" resolve="ListNode" />
-                                  <ref role="37wK5l" to="6exd:1OShD0HS45f" resolve="createList" />
-                                  <node concept="2OqwBi" id="1qY0I4bFAj_" role="37wK5m">
-                                    <node concept="37vLTw" id="1qY0I4bFAjA" role="2Oq$k0">
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-                                    <node concept="3_kTaI" id="1qY0I4bFAjB" role="2OqNvi" />
-                                  </node>
-                                </node>
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-                          </node>
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-                      </node>
-                    </node>
-                  </node>
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-              </node>
-            </node>
-          </node>
-        </node>
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-      <node concept="2t___k" id="1qY0I4bFAjC" role="1nLNMg">
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-        <node concept="3A20r5" id="1qY0I4bFAjD" role="2t_VXX">
-          <property role="TrG5h" value="cls" />
-        </node>
-      </node>
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   </node>
   <node concept="AVZre" id="1zN1RIlreLa">
     <property role="TrG5h" value="MethodCall" />
@@ -16297,208 +16035,6 @@
         </node>
       </node>
     </node>
-    <node concept="1X3_iC" id="2Cji6ERkO_j" role="lGtFl">
-      <property role="3V$3am" value="template" />
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