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 e464d27d..67f47c75 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
@@ -6239,6 +6239,21 @@
                       </node>
                       <node concept="32pEOW" id="53tmmMtoTc6" role="3vLBG7" />
                     </node>
+                    <node concept="3NuqgR" id="7XekScW7T7L" role="0Rg$4">
+                      <node concept="aZer4" id="7XekScW7T7M" role="3XD1gS">
+                        <property role="TrG5h" value="StripParamsT" />
+                        <node concept="2OqwBi" id="7XekScW7T7N" role="3gj$pD">
+                          <node concept="37vLTw" id="7XekScW7T7O" role="2Oq$k0">
+                            <ref role="3cqZAo" node="554EtBH_$Cg" resolve="paramTypes" />
+                          </node>
+                          <node concept="34oBXx" id="7XekScW7T7P" role="2OqNvi" />
+                        </node>
+                      </node>
+                      <node concept="aZer4" id="7XekScW7T7Q" role="3XD1gS">
+                        <property role="TrG5h" value="StripRetT" />
+                      </node>
+                      <node concept="32pEOW" id="7XekScW7T7R" role="3vLBG7" />
+                    </node>
                     <node concept="3xSepi" id="554EtBH_$D7" role="3xSepv">
                       <node concept="3Aq9E8" id="554EtBH_$D8" role="3xSepj">
                         <node concept="3I6sU6" id="554EtBH_$D9" role="3Ip0Jz">
@@ -6309,6 +6324,74 @@
                                   </node>
                                 </node>
                               </node>
+                              <node concept="3Aqczg" id="7XekScW7T9_" role="3cqZAp">
+                                <node concept="3Aqt3T" id="7XekScW7T9z" role="3Aqpz8">
+                                  <ref role="3AqCNq" to="kqnc:7XekScW7Slx" resolve="stripUpper" />
+                                  <node concept="a7P8L" id="7XekScW7Ta$" role="3AunhB">
+                                    <ref role="a7OzE" node="7XekScW7T7Q" resolve="StripRetT" />
+                                  </node>
+                                  <node concept="a7P8L" id="7XekScW7TaI" role="3AunhB">
+                                    <ref role="a7OzE" node="53tmmMtoLly" resolve="RetT" />
+                                  </node>
+                                </node>
+                              </node>
+                              <node concept="3SKdUt" id="7XekScWqall" role="3cqZAp">
+                                <node concept="1PaTwC" id="7XekScWqalm" role="1aUNEU">
+                                  <node concept="3oM_SD" id="7XekScWqamy" role="1PaTwD">
+                                    <property role="3oM_SC" value="FIXME" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqam$" role="1PaTwD">
+                                    <property role="3oM_SC" value="need" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqamB" role="1PaTwD">
+                                    <property role="3oM_SC" value="a" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqamF" role="1PaTwD">
+                                    <property role="3oM_SC" value="way" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqamK" role="1PaTwD">
+                                    <property role="3oM_SC" value="to" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqano" role="1PaTwD">
+                                    <property role="3oM_SC" value="use" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqamQ" role="1PaTwD">
+                                    <property role="3oM_SC" value="pass" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqamX" role="1PaTwD">
+                                    <property role="3oM_SC" value="term" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqan5" role="1PaTwD">
+                                    <property role="3oM_SC" value="list" />
+                                  </node>
+                                  <node concept="3oM_SD" id="7XekScWqane" role="1PaTwD">
+                                    <property role="3oM_SC" value="directly" />
+                                  </node>
+                                </node>
+                              </node>
+                              <node concept="3Aqczg" id="7XekScW7TaP" role="3cqZAp">
+                                <node concept="3Aqt3T" id="7XekScW7TaQ" role="3Aqpz8">
+                                  <ref role="3AqCNq" to="kqnc:7XekScW7SL3" resolve="stripLowerAll" />
+                                  <node concept="Hz6ka" id="7XekScWqajl" role="3AunhB">
+                                    <node concept="1Pxxm1" id="7XekScWqajk" role="Hz6kd">
+                                      <node concept="3wAshV" id="7XekScWqajy" role="1Pxxm2">
+                                        <node concept="a7P8L" id="7XekScWqajx" role="3wAq21">
+                                          <ref role="a7OzE" node="7XekScW7T7M" resolve="StripParamsT" />
+                                        </node>
+                                      </node>
+                                    </node>
+                                  </node>
+                                  <node concept="Hz6ka" id="7XekScWqajP" role="3AunhB">
+                                    <node concept="1Pxxm1" id="7XekScWqajO" role="Hz6kd">
+                                      <node concept="3wAshV" id="7XekScWqajZ" role="1Pxxm2">
+                                        <node concept="a7P8L" id="7XekScWqajY" role="3wAq21">
+                                          <ref role="a7OzE" node="53tmmMtoLj2" resolve="ParamsT" />
+                                        </node>
+                                      </node>
+                                    </node>
+                                  </node>
+                                </node>
+                              </node>
                               <node concept="3Aqczg" id="53tmmMtoOSO" role="3cqZAp">
                                 <node concept="3A8Hvi" id="53tmmMtoOSI" role="3Aqpz8">
                                   <node concept="a7P8L" id="53tmmMtoOUU" role="3A8wtg">
@@ -6318,14 +6401,14 @@
                                     <ref role="ns1xF" to="fa4b:6$MmqWflYd6" resolve="function" />
                                     <node concept="nsMwS" id="53tmmMtoOV3" role="ns1xD">
                                       <ref role="nsMwP" to="fa4b:6$MmqWflYdw" resolve="params" />
-                                      <node concept="a7P8L" id="53tmmMtoOV7" role="iSaTp">
-                                        <ref role="a7OzE" node="53tmmMtoLj2" resolve="ParamsT" />
+                                      <node concept="a7P8L" id="7XekScW7Tcc" role="iSaTp">
+                                        <ref role="a7OzE" node="7XekScW7T7M" resolve="StripParamsT" />
                                       </node>
                                     </node>
                                     <node concept="nsMwS" id="53tmmMtoOVl" role="ns1xD">
                                       <ref role="nsMwP" to="fa4b:6$MmqWflYdg" resolve="result" />
-                                      <node concept="a7P8L" id="53tmmMtoOVs" role="iSaTp">
-                                        <ref role="a7OzE" node="53tmmMtoLly" resolve="RetT" />
+                                      <node concept="a7P8L" id="7XekScW7Tcg" role="iSaTp">
+                                        <ref role="a7OzE" node="7XekScW7T7Q" resolve="StripRetT" />
                                       </node>
                                     </node>
                                   </node>