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 5df36b53..eb69af9a 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
@@ -35734,6 +35734,95 @@
         </node>
       </node>
     </node>
+    <node concept="3iyZe8" id="2o4j62BABrE" role="0oKgB">
+      <ref role="3iRiWT" node="5itBwMau8m1" resolve="lift" />
+      <node concept="3clFbS" id="2o4j62BABrF" role="3iwQuN">
+        <node concept="3SKdUt" id="2o4j62BABPA" role="3cqZAp">
+          <node concept="1PaTwC" id="2o4j62BABPB" role="1aUNEU">
+            <node concept="3oM_SD" id="2o4j62BABPC" role="1PaTwD">
+              <property role="3oM_SC" value="FIXME" />
+            </node>
+            <node concept="3oM_SD" id="2o4j62BABPT" role="1PaTwD">
+              <property role="3oM_SC" value="support" />
+            </node>
+            <node concept="3oM_SD" id="2o4j62BABPW" role="1PaTwD">
+              <property role="3oM_SC" value="multiple" />
+            </node>
+            <node concept="3oM_SD" id="2o4j62BABQ0" role="1PaTwD">
+              <property role="3oM_SC" value="alternatives" />
+            </node>
+          </node>
+        </node>
+        <node concept="3cpWs8" id="2o4j62BAH5l" role="3cqZAp">
+          <node concept="3cpWsn" id="2o4j62BAH5m" role="3cpWs9">
+            <property role="TrG5h" value="clsType" />
+            <node concept="3Tqbb2" id="2o4j62BAGK3" role="1tU5fm">
+              <ref role="ehGHo" to="tpee:g7uibYu" resolve="ClassifierType" />
+            </node>
+            <node concept="1PxgMI" id="2o4j62BAH5n" role="33vP2m">
+              <property role="1BlNFB" value="true" />
+              <node concept="chp4Y" id="2o4j62BAH5o" role="3oSUPX">
+                <ref role="cht4Q" to="tpee:g7uibYu" resolve="ClassifierType" />
+              </node>
+              <node concept="2OqwBi" id="2o4j62BAH5p" role="1m5AlR">
+                <node concept="2OqwBi" id="2o4j62BAH5q" role="2Oq$k0">
+                  <node concept="3j8tct" id="2o4j62BAH5r" role="2Oq$k0">
+                    <ref role="3j8tcu" node="2o4j62BABrV" resolve="altType" />
+                  </node>
+                  <node concept="3Tsc0h" id="2o4j62BAH5s" role="2OqNvi">
+                    <ref role="3TtcxE" to="tpee:72DAwHBizym" resolve="alternative" />
+                  </node>
+                </node>
+                <node concept="1uHKPH" id="2o4j62BAH5t" role="2OqNvi" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3Aqczg" id="2o4j62BABrG" role="3cqZAp">
+          <node concept="3jm4v3" id="2o4j62BABrH" role="3Aqpz8">
+            <ref role="3jm46O" node="5itBwMaSqCk" resolve="classifierType" />
+            <node concept="2OqwBi" id="2o4j62BABrI" role="3jicU7">
+              <node concept="37vLTw" id="2o4j62BAH5u" role="2Oq$k0">
+                <ref role="3cqZAo" node="2o4j62BAH5m" resolve="clsType" />
+              </node>
+              <node concept="3TrEf2" id="2o4j62BAH2z" role="2OqNvi">
+                <ref role="3Tt5mk" to="tpee:g7uigIF" resolve="classifier" />
+              </node>
+            </node>
+            <node concept="2OqwBi" id="2o4j62BABrL" role="3jicU7">
+              <node concept="37vLTw" id="2o4j62BAHd7" role="2Oq$k0">
+                <ref role="3cqZAo" node="2o4j62BAH5m" resolve="clsType" />
+              </node>
+              <node concept="3Tsc0h" id="2o4j62BABrN" role="2OqNvi">
+                <ref role="3TtcxE" to="tpee:g91_B6F" resolve="parameter" />
+              </node>
+            </node>
+            <node concept="3i2tpf" id="2o4j62BABrO" role="3jicU7">
+              <ref role="3i285M" node="5itBwMaLICh" resolve="substitution" />
+            </node>
+            <node concept="3i2tpf" id="2o4j62BABrP" role="3jicU7">
+              <ref role="3i285M" node="5itBwMb2a1b" resolve="allowUncheckedConversion" />
+            </node>
+            <node concept="a7P8L" id="2o4j62BABrQ" role="3jm6SO">
+              <ref role="a7OzE" node="2o4j62BABrT" resolve="Type" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3uniRu" id="2o4j62BABrR" role="3tb1AD">
+        <node concept="32pEOW" id="2o4j62BABrS" role="3vLBG7" />
+        <node concept="aZer4" id="2o4j62BABrT" role="3XD1gS">
+          <property role="TrG5h" value="Type" />
+        </node>
+      </node>
+      <node concept="3ixlbQ" id="2o4j62BABrU" role="3iweTQ">
+        <property role="3ixm6n" value="true" />
+        <ref role="3ixz9q" to="tpee:72DAwHBizyl" resolve="AlternativeType" />
+        <node concept="3ixQyH" id="2o4j62BABrV" role="3ix8rx">
+          <property role="TrG5h" value="altType" />
+        </node>
+      </node>
+    </node>
     <node concept="3hwh0R" id="5itBwMaSqCk" role="0oKgB">
       <property role="TrG5h" value="classifierType" />
       <node concept="3hPv5a" id="5itBwMaSCVV" role="3hP23H">