From 3793b78efbff07c4781b84cf5b9828f9175cc6f1 Mon Sep 17 00:00:00 2001
From: Fedor Isakov <fisakov@gmail.com>
Date: Tue, 6 Apr 2021 17:55:25 +0200
Subject: [PATCH] Types for j.m.baseLanguage.classifiers

---
 .mps/modules.xml                              |    1 +
 samples/mpscore/.mps/modules.xml              |    2 +
 samples/mpscore/build.xml                     |   12 +-
 ...fiersExt.generator.templates@generator.mps |   24 +
 ...brains.mps.baseLanguage.classifiersExt.mpl |  130 ++
 ...s.baseLanguage.classifiersExt.behavior.mps |   12 +
 ...aseLanguage.classifiersExt.constraints.mps |   19 +
 ...mps.baseLanguage.classifiersExt.editor.mps |   12 +
 ....baseLanguage.classifiersExt.structure.mps |   11 +
 ....mps.baseLanguage.classifiersExt.types.mps | 1492 +++++++++++++++++
 ...baseLanguage.classifiersExt.typesystem.mps |   11 +
 .../models/samples.mpscore.build.mps          |   10 +
 12 files changed, 1735 insertions(+), 1 deletion(-)
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/generator/templates/jetbrains.mps.baseLanguage.classifiersExt.generator.templates@generator.mps
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/jetbrains.mps.baseLanguage.classifiersExt.mpl
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.behavior.mps
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.constraints.mps
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.editor.mps
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.structure.mps
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.types.mps
 create mode 100644 samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.typesystem.mps

diff --git a/.mps/modules.xml b/.mps/modules.xml
index 70ab6cf0..bd0a1bca 100644
--- a/.mps/modules.xml
+++ b/.mps/modules.xml
@@ -38,6 +38,7 @@
       <modulePath path="$PROJECT_DIR$/samples/lambdacalc/solutions/samples.lambdacalc.build/samples.lambdacalc.build.msd" folder="samples.lambdacalc" />
       <modulePath path="$PROJECT_DIR$/samples/lambdacalc/solutions/samples.lambdacalc.demo/samples.lambdacalc.demo.msd" folder="samples.lambdacalc" />
       <modulePath path="$PROJECT_DIR$/samples/mpscore/languages/jetbrains.mps.baseLanguage.blTypesExt/jetbrains.mps.baseLanguage.blTypesExt.mpl" folder="samples.mpscore.ext.baseLanguage" />
+      <modulePath path="$PROJECT_DIR$/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/jetbrains.mps.baseLanguage.classifiersExt.mpl" folder="samples.mpscore.ext.baseLanguage" />
       <modulePath path="$PROJECT_DIR$/samples/mpscore/languages/jetbrains.mps.baseLanguage.closuresExt/jetbrains.mps.baseLanguage.closuresExt.mpl" folder="samples.mpscore.ext.baseLanguage" />
       <modulePath path="$PROJECT_DIR$/samples/mpscore/languages/jetbrains.mps.baseLanguage.collectionsExt/jetbrains.mps.baseLanguage.collectionsExt.mpl" folder="samples.mpscore.ext.baseLanguage" />
       <modulePath path="$PROJECT_DIR$/samples/mpscore/languages/jetbrains.mps.baseLanguage.function/jetbrains.mps.baseLanguage.function.mpl" folder="samples.mpscore.ext.baseLanguage" />
diff --git a/samples/mpscore/.mps/modules.xml b/samples/mpscore/.mps/modules.xml
index 0190c5d5..80b0bcc8 100644
--- a/samples/mpscore/.mps/modules.xml
+++ b/samples/mpscore/.mps/modules.xml
@@ -3,6 +3,7 @@
   <component name="MPSProject">
     <projectModules>
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguage.blTypesExt/jetbrains.mps.baseLanguage.blTypesExt.mpl" folder="" />
+      <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguage.classifiersExt/jetbrains.mps.baseLanguage.classifiersExt.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguage.closuresExt/jetbrains.mps.baseLanguage.closuresExt.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguage.collectionsExt/jetbrains.mps.baseLanguage.collectionsExt.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguage.function/jetbrains.mps.baseLanguage.function.mpl" folder="" />
@@ -11,6 +12,7 @@
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguage.tuplesExt/jetbrains.mps.baseLanguage.tuplesExt.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguageExt/jetbrains.mps.baseLanguageExt.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.baseLanguageInternalExt/jetbrains.mps.baseLanguageInternalExt.mpl" folder="" />
+      <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.lang.behaviorExt/jetbrains.mps.behaviorExt.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.lang.coderulesExt/jetbrains.mps.lang.coderulesExt.mpl" folder="ext.coderules" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.lang.constraintsExt/jetbrains.mps.lang.constraintsExt.mpl" folder="" />
       <modulePath path="$PROJECT_DIR$/languages/jetbrains.mps.lang.generator.generationContextExt/jetbrains.mps.lang.generator.generationContextExt.mpl" folder="" />
diff --git a/samples/mpscore/build.xml b/samples/mpscore/build.xml
index 2e3397c3..255b6058 100644
--- a/samples/mpscore/build.xml
+++ b/samples/mpscore/build.xml
@@ -526,7 +526,9 @@
           <module ref="9a4afe51-f114-4595-b5df-048ce3c596be(jetbrains.mps.runtime)" kind="rt" />
           <module ref="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" kind="cl" />
           <module ref="d44dab97-aaac-44cb-9745-8a14db674c03(jetbrains.mps.baseLanguage.tuples.runtime)" kind="cl" />
+          <module ref="af65afd8-f0dd-4942-87d9-63a55f2a9db1(jetbrains.mps.lang.behavior)" kind="cl" />
           <module ref="a9e4c532-c5f5-4bb7-99ef-42abb73bbb70(jetbrains.mps.lang.descriptor.aspects)" kind="cl" />
+          <module ref="65e59b42-e7f3-45ec-8692-6c7829780afe(jetbrains.mps.lang.smodelExt)" kind="cl" />
           <module ref="35320f26-77cb-4c55-be9f-a97a27770af1(jetbrains.mps.logic)" kind="cl" />
         </dependencies>
         <uses>
@@ -4534,7 +4536,7 @@
     </javac>
   </target>
   
-  <target name="java.compile.jetbrains.mps.baseLanguage.tuplesExt" depends="java.compile.jetbrains.mps.baseLanguageExt, fetchDependencies">
+  <target name="java.compile.jetbrains.mps.baseLanguage.tuplesExt" depends="java.compile.jetbrains.mps.baseLanguageExt, java.compile.jetbrains.mps.lang.smodelExt, fetchDependencies">
     <mkdir dir="${mps.macro.mpscore_home}/languages/jetbrains.mps.baseLanguage.tuplesExt/source_gen" />
     <mkdir dir="${build.tmp}/java/out/jetbrains.mps.baseLanguage.tuplesExt" />
     <javac destdir="${build.tmp}/java/out/jetbrains.mps.baseLanguage.tuplesExt" fork="true" encoding="utf8" includeantruntime="false" debug="true">
@@ -4571,6 +4573,7 @@
         <pathelement path="${build.tmp}/java/out/jetbrains.mps.baseLanguageExt" />
         <fileset file="${artifacts.mps}/lib/mps-feedback-api.jar" />
         <fileset file="${artifacts.mps}/lib/mps-messages-api.jar" />
+        <pathelement path="${build.tmp}/java/out/jetbrains.mps.lang.smodelExt" />
         <fileset file="${artifacts.mps}/lib/annotations.jar" />
         <fileset dir="${artifacts.mps}/lib" includes="*.jar" />
         <fileset file="${artifacts.mps}/lib/log4j.jar" />
@@ -4578,14 +4581,20 @@
         <fileset file="${artifacts.mps}/lib/trove4j.jar" />
         <fileset file="${artifacts.mps}/lib/ecj-4.16.jar" />
         <fileset file="${artifacts.mps}/languages/baseLanguage/jetbrains.mps.baseLanguage.jar" />
+        <fileset file="${artifacts.mps}/languages/baseLanguage/jetbrains.mps.baseLanguage.closures.jar" />
+        <fileset file="${artifacts.mps}/languages/baseLanguage/jetbrains.mps.baseLanguage.collections.jar" />
         <fileset file="${artifacts.mps}/languages/baseLanguage/jetbrains.mps.baseLanguage.logging.runtime.jar" />
         <fileset file="${artifacts.mps}/languages/baseLanguage/jetbrains.mps.baseLanguage.scopes.jar" />
         <fileset file="${artifacts.mps}/languages/baseLanguage/jetbrains.mps.baseLanguage.tuples.jar" />
+        <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.behavior.jar" />
         <fileset file="${artifacts.coderules}/deploy/jetbrains.mps.lang.coderules.runtime.jar" />
         <fileset file="${artifacts.coderules}/deploy/jetbrains.mps.lang.coderules.template.jar" />
         <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.core.jar" />
         <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.descriptor.aspects.jar" />
+        <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.modelapi.jar" />
         <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.scopes.runtime.jar" />
+        <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.smodel.jar" />
+        <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.structure.jar" />
         <fileset file="${artifacts.mps}/languages/languageDesign/jetbrains.mps.lang.traceable.jar" />
         <fileset file="${artifacts.coderules}/deploy/jetbrains.mps.lang.typechecking.runtime.jar" />
         <fileset file="${artifacts.coderules}/deploy/jetbrains.mps.logic.jar" />
@@ -5628,6 +5637,7 @@
       <pathelement location="${artifacts.mps}/plugins/mps-testing/languages/languageDesign/jetbrains.mps.lang.test.jar" />
       <pathelement location="${artifacts.mps}/plugins/mps-testing/languages/languageDesign/jetbrains.mps.lang.test.matcher.jar" />
       <pathelement location="${artifacts.mps}/plugins/mps-testing/languages/languageDesign/jetbrains.mps.lang.test.runtime.jar" />
+      <pathelement location="${build.layout}/deploy/jetbrains.mps.lang.smodelExt.jar" />
     </path>
     <pathconvert pathsep="${path.separator}" property="mps.libraries.path.string" refid="mps.libraries.path" />
     <path id="mps.plugins.path">
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/generator/templates/jetbrains.mps.baseLanguage.classifiersExt.generator.templates@generator.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/generator/templates/jetbrains.mps.baseLanguage.classifiersExt.generator.templates@generator.mps
new file mode 100644
index 00000000..31a5d24d
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/generator/templates/jetbrains.mps.baseLanguage.classifiersExt.generator.templates@generator.mps
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:786bc3d7-6286-4aa0-867f-96eb36964146(jetbrains.mps.baseLanguage.classifiersExt.generator.templates@generator)">
+  <persistence version="9" />
+  <languages>
+    <devkit ref="a2eb3a43-fcc2-4200-80dc-c60110c4862d(jetbrains.mps.devkit.templates)" />
+  </languages>
+  <imports>
+    <import index="22fk" ref="r:fb311379-c8d1-47ac-86b3-42b1746f33b4(jetbrains.mps.baseLanguage.classifiersExt.structure)" />
+  </imports>
+  <registry>
+    <language id="b401a680-8325-4110-8fd3-84331ff25bef" name="jetbrains.mps.lang.generator">
+      <concept id="1095416546421" name="jetbrains.mps.lang.generator.structure.MappingConfiguration" flags="ig" index="bUwia" />
+    </language>
+    <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
+      <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
+        <property id="1169194664001" name="name" index="TrG5h" />
+      </concept>
+    </language>
+  </registry>
+  <node concept="bUwia" id="1tzntNAnmvZ">
+    <property role="TrG5h" value="main" />
+  </node>
+</model>
+
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/jetbrains.mps.baseLanguage.classifiersExt.mpl b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/jetbrains.mps.baseLanguage.classifiersExt.mpl
new file mode 100644
index 00000000..7f33aab1
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/jetbrains.mps.baseLanguage.classifiersExt.mpl
@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<language namespace="jetbrains.mps.baseLanguage.classifiersExt" uuid="37ccac09-5b15-47b1-8c28-752b39fea984" languageVersion="0" moduleVersion="0">
+  <models>
+    <modelRoot contentPath="${module}" type="default">
+      <sourceRoot location="models" />
+    </modelRoot>
+  </models>
+  <facets>
+    <facet type="java">
+      <classes generated="true" path="${module}/classes_gen" />
+    </facet>
+  </facets>
+  <accessoryModels />
+  <generators>
+    <generator alias="main" namespace="jetbrains.mps.baseLanguage.classifiersExt.generator" uuid="1e54a2cb-2fd8-4263-9fe5-090f7fd057cc">
+      <models>
+        <modelRoot contentPath="${module}/generator" type="default">
+          <sourceRoot location="templates" />
+        </modelRoot>
+      </models>
+      <facets>
+        <facet type="java">
+          <classes generated="true" path="${module}/generator/classes_gen" />
+        </facet>
+      </facets>
+      <external-templates />
+      <languageVersions>
+        <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="11" />
+        <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
+        <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+        <language slang="l:f2801650-65d5-424e-bb1b-463a8781b786:jetbrains.mps.baseLanguage.javadoc" version="2" />
+        <language slang="l:760a0a8c-eabb-4521-8bfd-65db761a9ba3:jetbrains.mps.baseLanguage.logging" version="0" />
+        <language slang="l:a247e09e-2435-45ba-b8d2-07e93feba96a:jetbrains.mps.baseLanguage.tuples" version="0" />
+        <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
+        <language slang="l:b401a680-8325-4110-8fd3-84331ff25bef:jetbrains.mps.lang.generator" version="4" />
+        <language slang="l:d7706f63-9be2-479c-a3da-ae92af1e64d5:jetbrains.mps.lang.generator.generationContext" version="2" />
+        <language slang="l:289fcc83-6543-41e8-a5ca-768235715ce4:jetbrains.mps.lang.generator.generationParameters" version="0" />
+        <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />
+        <language slang="l:3a13115c-633c-4c5c-bbcc-75c4219e9555:jetbrains.mps.lang.quotation" version="5" />
+        <language slang="l:13744753-c81f-424a-9c1b-cf8943bf4e86:jetbrains.mps.lang.sharedConcepts" version="0" />
+        <language slang="l:7866978e-a0f0-4cc7-81bc-4d213d9375e1:jetbrains.mps.lang.smodel" version="18" />
+        <language slang="l:c7fb639f-be78-4307-89b0-b5959c3fa8c8:jetbrains.mps.lang.text" version="0" />
+        <language slang="l:9ded098b-ad6a-4657-bfd9-48636cfe8bc3:jetbrains.mps.lang.traceable" version="0" />
+      </languageVersions>
+      <dependencyVersions>
+        <module reference="3f233e7f-b8a6-46d2-a57f-795d56775243(Annotations)" version="0" />
+        <module reference="6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)" version="0" />
+        <module reference="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" version="0" />
+        <module reference="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" version="0" />
+        <module reference="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" version="0" />
+        <module reference="443f4c36-fcf5-4eb6-9500-8d06ed259e3e(jetbrains.mps.baseLanguage.classifiers)" version="0" />
+        <module reference="37ccac09-5b15-47b1-8c28-752b39fea984(jetbrains.mps.baseLanguage.classifiersExt)" version="0" />
+        <module reference="1e54a2cb-2fd8-4263-9fe5-090f7fd057cc(jetbrains.mps.baseLanguage.classifiersExt.generator)" version="0" />
+        <module reference="52b81ac7-93fd-4e9e-b972-4995882da6d4(jetbrains.mps.baseLanguage.references.runtime)" version="0" />
+        <module reference="e39e4a59-8cb6-498e-860e-8fa8361c0d90(jetbrains.mps.baseLanguage.scopes)" version="0" />
+        <module reference="0fda14cc-a416-4c81-869a-2175d8b3325d(jetbrains.mps.baseLanguageExt)" version="0" />
+        <module reference="2d3c70e9-aab2-4870-8d8d-6036800e4103(jetbrains.mps.kernel)" version="0" />
+        <module reference="ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)" version="0" />
+        <module reference="9ded098b-ad6a-4657-bfd9-48636cfe8bc3(jetbrains.mps.lang.traceable)" version="0" />
+        <module reference="bbf5c548-7111-4a53-a117-cdefc664cf34(jetbrains.mps.logic.reactor)" version="0" />
+        <module reference="a5478664-6b44-4c62-a9f7-434f8aa57eee(jetbrains.mps.logic.runtime)" version="0" />
+      </dependencyVersions>
+      <mapping-priorities />
+    </generator>
+  </generators>
+  <sourcePath />
+  <dependencies>
+    <dependency reexport="false">f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)</dependency>
+    <dependency reexport="false">6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)</dependency>
+  </dependencies>
+  <languageVersions>
+    <language slang="l:f3061a53-9226-4cc5-a443-f952ceaf5816:jetbrains.mps.baseLanguage" version="11" />
+    <language slang="l:443f4c36-fcf5-4eb6-9500-8d06ed259e3e:jetbrains.mps.baseLanguage.classifiers" version="0" />
+    <language slang="l:fd392034-7849-419d-9071-12563d152375:jetbrains.mps.baseLanguage.closures" version="0" />
+    <language slang="l:83888646-71ce-4f1c-9c53-c54016f6ad4f:jetbrains.mps.baseLanguage.collections" version="1" />
+    <language slang="l:f2801650-65d5-424e-bb1b-463a8781b786:jetbrains.mps.baseLanguage.javadoc" version="2" />
+    <language slang="l:760a0a8c-eabb-4521-8bfd-65db761a9ba3:jetbrains.mps.baseLanguage.logging" version="0" />
+    <language slang="l:a247e09e-2435-45ba-b8d2-07e93feba96a:jetbrains.mps.baseLanguage.tuples" version="0" />
+    <language slang="l:aee9cad2-acd4-4608-aef2-0004f6a1cdbd:jetbrains.mps.lang.actions" version="4" />
+    <language slang="l:af65afd8-f0dd-4942-87d9-63a55f2a9db1:jetbrains.mps.lang.behavior" version="2" />
+    <language slang="l:c4803b19-6d89-4a3b-bf82-390769514add:jetbrains.mps.lang.coderules" version="21" />
+    <language slang="l:3f4bc5f5-c6c1-4a28-8b10-c83066ffa4a1:jetbrains.mps.lang.constraints" version="6" />
+    <language slang="l:e51810c5-7308-4642-bcb6-469e61b5dd18:jetbrains.mps.lang.constraints.msg.specification" version="0" />
+    <language slang="l:47257bf3-78d3-470b-89d9-8c3261a61d15:jetbrains.mps.lang.constraints.rules" version="0" />
+    <language slang="l:5dae8159-ab99-46bb-a40d-0cee30ee7018:jetbrains.mps.lang.constraints.rules.kinds" version="0" />
+    <language slang="l:134c38d4-e3af-4d9e-b069-1c7df0a4005d:jetbrains.mps.lang.constraints.rules.skeleton" version="0" />
+    <language slang="l:3ad5badc-1d9c-461c-b7b1-fa2fcd0a0ae7:jetbrains.mps.lang.context" version="0" />
+    <language slang="l:ea3159bf-f48e-4720-bde2-86dba75f0d34:jetbrains.mps.lang.context.defs" version="0" />
+    <language slang="l:ceab5195-25ea-4f22-9b92-103b95ca8c0c:jetbrains.mps.lang.core" version="2" />
+    <language slang="l:f4ad079d-bc71-4ffb-9600-9328705cf998:jetbrains.mps.lang.descriptor" version="0" />
+    <language slang="l:18bc6592-03a6-4e29-a83a-7ff23bde13ba:jetbrains.mps.lang.editor" version="14" />
+    <language slang="l:ad93155d-79b2-4759-b10c-55123e763903:jetbrains.mps.lang.messages" version="0" />
+    <language slang="l:446c26eb-2b7b-4bf0-9b35-f83fa582753e:jetbrains.mps.lang.modelapi" version="0" />
+    <language slang="l:d4615e3b-d671-4ba9-af01-2b78369b0ba7:jetbrains.mps.lang.pattern" version="2" />
+    <language slang="l:3a13115c-633c-4c5c-bbcc-75c4219e9555:jetbrains.mps.lang.quotation" version="5" />
+    <language slang="l:982eb8df-2c96-4bd7-9963-11712ea622e5:jetbrains.mps.lang.resources" version="2" />
+    <language slang="l:b3551702-269c-4f05-ba61-58060cef4292:jetbrains.mps.lang.rulesAndMessages" version="0" />
+    <language slang="l:d8f591ec-4d86-4af2-9f92-a9e93c803ffa:jetbrains.mps.lang.scopes" version="0" />
+    <language slang="l:13744753-c81f-424a-9c1b-cf8943bf4e86:jetbrains.mps.lang.sharedConcepts" version="0" />
+    <language slang="l:7866978e-a0f0-4cc7-81bc-4d213d9375e1:jetbrains.mps.lang.smodel" version="18" />
+    <language slang="l:c72da2b9-7cce-4447-8389-f407dc1158b7:jetbrains.mps.lang.structure" version="9" />
+    <language slang="l:c7fb639f-be78-4307-89b0-b5959c3fa8c8:jetbrains.mps.lang.text" version="0" />
+    <language slang="l:9ded098b-ad6a-4657-bfd9-48636cfe8bc3:jetbrains.mps.lang.traceable" version="0" />
+    <language slang="l:4b5b4f8d-d30a-4ef8-9bf4-dfd26af9d462:jetbrains.mps.lang.typechecking" version="0" />
+    <language slang="l:7a5dda62-9140-4668-ab76-d5ed1746f2b2:jetbrains.mps.lang.typesystem" version="5" />
+    <language slang="l:35320f26-77cb-4c55-be9f-a97a27770af1:jetbrains.mps.logic" version="13" />
+  </languageVersions>
+  <dependencyVersions>
+    <module reference="3f233e7f-b8a6-46d2-a57f-795d56775243(Annotations)" version="0" />
+    <module reference="6354ebe7-c22a-4a0f-ac54-50b52ab9b065(JDK)" version="0" />
+    <module reference="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea(MPS.Core)" version="0" />
+    <module reference="8865b7a8-5271-43d3-884c-6fd1d9cfdd34(MPS.OpenAPI)" version="0" />
+    <module reference="f3061a53-9226-4cc5-a443-f952ceaf5816(jetbrains.mps.baseLanguage)" version="0" />
+    <module reference="443f4c36-fcf5-4eb6-9500-8d06ed259e3e(jetbrains.mps.baseLanguage.classifiers)" version="0" />
+    <module reference="37ccac09-5b15-47b1-8c28-752b39fea984(jetbrains.mps.baseLanguage.classifiersExt)" version="0" />
+    <module reference="e39e4a59-8cb6-498e-860e-8fa8361c0d90(jetbrains.mps.baseLanguage.scopes)" version="0" />
+    <module reference="0fda14cc-a416-4c81-869a-2175d8b3325d(jetbrains.mps.baseLanguageExt)" version="0" />
+    <module reference="2d3c70e9-aab2-4870-8d8d-6036800e4103(jetbrains.mps.kernel)" version="0" />
+    <module reference="ceab5195-25ea-4f22-9b92-103b95ca8c0c(jetbrains.mps.lang.core)" version="0" />
+    <module reference="a9e4c532-c5f5-4bb7-99ef-42abb73bbb70(jetbrains.mps.lang.descriptor.aspects)" version="0" />
+    <module reference="9ded098b-ad6a-4657-bfd9-48636cfe8bc3(jetbrains.mps.lang.traceable)" version="0" />
+    <module reference="bbf5c548-7111-4a53-a117-cdefc664cf34(jetbrains.mps.logic.reactor)" version="0" />
+    <module reference="a5478664-6b44-4c62-a9f7-434f8aa57eee(jetbrains.mps.logic.runtime)" version="0" />
+  </dependencyVersions>
+  <extendedLanguages>
+    <extendedLanguage>0fda14cc-a416-4c81-869a-2175d8b3325d(jetbrains.mps.baseLanguageExt)</extendedLanguage>
+    <extendedLanguage>443f4c36-fcf5-4eb6-9500-8d06ed259e3e(jetbrains.mps.baseLanguage.classifiers)</extendedLanguage>
+  </extendedLanguages>
+</language>
+
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.behavior.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.behavior.mps
new file mode 100644
index 00000000..4df50bc8
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.behavior.mps
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:048fb573-0d5a-4c32-8ec3-59066661f432(jetbrains.mps.baseLanguage.classifiersExt.behavior)">
+  <persistence version="9" />
+  <languages>
+    <use id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel" version="18" />
+    <use id="af65afd8-f0dd-4942-87d9-63a55f2a9db1" name="jetbrains.mps.lang.behavior" version="2" />
+    <devkit ref="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
+  </languages>
+  <imports />
+  <registry />
+</model>
+
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.constraints.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.constraints.mps
new file mode 100644
index 00000000..35fd0127
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.constraints.mps
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:faa7536f-6162-492a-ad93-d6a4b0ccbc1c(jetbrains.mps.baseLanguage.classifiersExt.constraints)">
+  <persistence version="9" />
+  <languages>
+    <use id="5dae8159-ab99-46bb-a40d-0cee30ee7018" name="jetbrains.mps.lang.constraints.rules.kinds" version="0" />
+    <use id="ea3159bf-f48e-4720-bde2-86dba75f0d34" name="jetbrains.mps.lang.context.defs" version="0" />
+    <use id="e51810c5-7308-4642-bcb6-469e61b5dd18" name="jetbrains.mps.lang.constraints.msg.specification" version="0" />
+    <use id="134c38d4-e3af-4d9e-b069-1c7df0a4005d" name="jetbrains.mps.lang.constraints.rules.skeleton" version="0" />
+    <use id="b3551702-269c-4f05-ba61-58060cef4292" name="jetbrains.mps.lang.rulesAndMessages" version="0" />
+    <use id="3f4bc5f5-c6c1-4a28-8b10-c83066ffa4a1" name="jetbrains.mps.lang.constraints" version="6" />
+    <use id="13744753-c81f-424a-9c1b-cf8943bf4e86" name="jetbrains.mps.lang.sharedConcepts" version="0" />
+    <use id="3ad5badc-1d9c-461c-b7b1-fa2fcd0a0ae7" name="jetbrains.mps.lang.context" version="0" />
+    <use id="ad93155d-79b2-4759-b10c-55123e763903" name="jetbrains.mps.lang.messages" version="0" />
+    <devkit ref="00000000-0000-4000-0000-5604ebd4f22c(jetbrains.mps.devkit.aspect.constraints)" />
+  </languages>
+  <imports />
+  <registry />
+</model>
+
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.editor.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.editor.mps
new file mode 100644
index 00000000..0c669997
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.editor.mps
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:e9601a4a-ac74-404b-a736-da84681b347c(jetbrains.mps.baseLanguage.classifiersExt.editor)">
+  <persistence version="9" />
+  <languages>
+    <use id="18bc6592-03a6-4e29-a83a-7ff23bde13ba" name="jetbrains.mps.lang.editor" version="14" />
+    <use id="aee9cad2-acd4-4608-aef2-0004f6a1cdbd" name="jetbrains.mps.lang.actions" version="4" />
+    <devkit ref="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
+  </languages>
+  <imports />
+  <registry />
+</model>
+
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.structure.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.structure.mps
new file mode 100644
index 00000000..f436ed94
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.structure.mps
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:fb311379-c8d1-47ac-86b3-42b1746f33b4(jetbrains.mps.baseLanguage.classifiersExt.structure)">
+  <persistence version="9" />
+  <languages>
+    <use id="c72da2b9-7cce-4447-8389-f407dc1158b7" name="jetbrains.mps.lang.structure" version="9" />
+    <devkit ref="78434eb8-b0e5-444b-850d-e7c4ad2da9ab(jetbrains.mps.devkit.aspect.structure)" />
+  </languages>
+  <imports />
+  <registry />
+</model>
+
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.types.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.types.mps
new file mode 100644
index 00000000..45c7dcf0
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.types.mps
@@ -0,0 +1,1492 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:6c26d4e5-97de-4186-9d41-98585ca1fea9(jetbrains.mps.baseLanguage.classifiersExt.types)">
+  <persistence version="9" />
+  <languages>
+    <use id="4b5b4f8d-d30a-4ef8-9bf4-dfd26af9d462" name="jetbrains.mps.lang.typechecking" version="0" />
+    <use id="c4803b19-6d89-4a3b-bf82-390769514add" name="jetbrains.mps.lang.coderules" version="21" />
+    <use id="443f4c36-fcf5-4eb6-9500-8d06ed259e3e" name="jetbrains.mps.baseLanguage.classifiers" version="0" />
+    <engage id="4b5b4f8d-d30a-4ef8-9bf4-dfd26af9d462" name="jetbrains.mps.lang.typechecking" />
+    <devkit ref="fbc25dd2-5da4-483a-8b19-70928e1b62d7(jetbrains.mps.devkit.general-purpose)" />
+  </languages>
+  <imports>
+    <import index="kqnc" ref="r:92b96158-68e6-4f53-a32b-36e2b456fe01(jetbrains.mps.baseLanguageExt.types)" />
+    <import index="tp4f" ref="r:00000000-0000-4000-0000-011c89590373(jetbrains.mps.baseLanguage.classifiers.structure)" />
+    <import index="tpee" ref="r:00000000-0000-4000-0000-011c895902ca(jetbrains.mps.baseLanguage.structure)" />
+    <import index="wyt6" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.lang(JDK/)" />
+    <import index="tp4h" ref="r:00000000-0000-4000-0000-011c8959036d(jetbrains.mps.baseLanguage.classifiers.behavior)" implicit="true" />
+  </imports>
+  <registry>
+    <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
+      <concept id="1082485599095" name="jetbrains.mps.baseLanguage.structure.BlockStatement" flags="nn" index="9aQIb">
+        <child id="1082485599096" name="statements" index="9aQI4" />
+      </concept>
+      <concept id="1215693861676" name="jetbrains.mps.baseLanguage.structure.BaseAssignmentExpression" flags="nn" index="d038R">
+        <child id="1068498886297" name="rValue" index="37vLTx" />
+        <child id="1068498886295" name="lValue" index="37vLTJ" />
+      </concept>
+      <concept id="1153422305557" name="jetbrains.mps.baseLanguage.structure.LessThanOrEqualsExpression" flags="nn" index="2dkUwp" />
+      <concept id="1202948039474" name="jetbrains.mps.baseLanguage.structure.InstanceMethodCallOperation" flags="nn" index="liA8E" />
+      <concept id="1239714755177" name="jetbrains.mps.baseLanguage.structure.AbstractUnaryNumberOperation" flags="nn" index="2$Kvd9">
+        <child id="1239714902950" name="expression" index="2$L3a6" />
+      </concept>
+      <concept id="1154032098014" name="jetbrains.mps.baseLanguage.structure.AbstractLoopStatement" flags="nn" index="2LF5Ji">
+        <child id="1154032183016" name="body" index="2LFqv$" />
+      </concept>
+      <concept id="1197027756228" name="jetbrains.mps.baseLanguage.structure.DotExpression" flags="nn" index="2OqwBi">
+        <child id="1197027771414" name="operand" index="2Oq$k0" />
+        <child id="1197027833540" name="operation" index="2OqNvi" />
+      </concept>
+      <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="1070534058343" name="jetbrains.mps.baseLanguage.structure.NullLiteral" flags="nn" index="10Nm6u" />
+      <concept id="1070534370425" name="jetbrains.mps.baseLanguage.structure.IntegerType" flags="in" index="10Oyi0" />
+      <concept id="1070534644030" name="jetbrains.mps.baseLanguage.structure.BooleanType" flags="in" index="10P_77" />
+      <concept id="1068431474542" name="jetbrains.mps.baseLanguage.structure.VariableDeclaration" flags="ng" index="33uBYm">
+        <child id="1068431790190" name="initializer" index="33vP2m" />
+      </concept>
+      <concept id="1068498886296" name="jetbrains.mps.baseLanguage.structure.VariableReference" flags="nn" index="37vLTw">
+        <reference id="1068581517664" name="variableDeclaration" index="3cqZAo" />
+      </concept>
+      <concept id="1068498886294" name="jetbrains.mps.baseLanguage.structure.AssignmentExpression" flags="nn" index="37vLTI" />
+      <concept id="4972933694980447171" name="jetbrains.mps.baseLanguage.structure.BaseVariableDeclaration" flags="ng" index="19Szcq">
+        <child id="5680397130376446158" name="type" index="1tU5fm" />
+      </concept>
+      <concept id="1068580123152" name="jetbrains.mps.baseLanguage.structure.EqualsExpression" flags="nn" index="3clFbC" />
+      <concept id="1068580123155" name="jetbrains.mps.baseLanguage.structure.ExpressionStatement" flags="nn" index="3clFbF">
+        <child id="1068580123156" name="expression" index="3clFbG" />
+      </concept>
+      <concept id="1068580123157" name="jetbrains.mps.baseLanguage.structure.Statement" flags="nn" index="3clFbH" />
+      <concept id="1068580123159" name="jetbrains.mps.baseLanguage.structure.IfStatement" flags="nn" index="3clFbJ">
+        <child id="1082485599094" name="ifFalseStatement" index="9aQIa" />
+        <child id="1068580123160" name="condition" index="3clFbw" />
+        <child id="1068580123161" name="ifTrue" index="3clFbx" />
+      </concept>
+      <concept id="1068580123136" name="jetbrains.mps.baseLanguage.structure.StatementList" flags="sn" stub="5293379017992965193" index="3clFbS">
+        <child id="1068581517665" name="statement" index="3cqZAp" />
+      </concept>
+      <concept id="1068580320020" name="jetbrains.mps.baseLanguage.structure.IntegerConstant" flags="nn" index="3cmrfG">
+        <property id="1068580320021" name="value" index="3cmrfH" />
+      </concept>
+      <concept id="1068581242864" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclarationStatement" flags="nn" index="3cpWs8">
+        <child id="1068581242865" name="localVariableDeclaration" index="3cpWs9" />
+      </concept>
+      <concept id="1068581242869" name="jetbrains.mps.baseLanguage.structure.MinusExpression" flags="nn" index="3cpWsd" />
+      <concept id="1068581242863" name="jetbrains.mps.baseLanguage.structure.LocalVariableDeclaration" flags="nr" index="3cpWsn" />
+      <concept id="1081506773034" name="jetbrains.mps.baseLanguage.structure.LessThanExpression" flags="nn" index="3eOVzh" />
+      <concept id="1081516740877" name="jetbrains.mps.baseLanguage.structure.NotExpression" flags="nn" index="3fqX7Q">
+        <child id="1081516765348" name="expression" index="3fr31v" />
+      </concept>
+      <concept id="1204053956946" name="jetbrains.mps.baseLanguage.structure.IMethodCall" flags="ng" index="1ndlxa">
+        <reference id="1068499141037" name="baseMethodDeclaration" index="37wK5l" />
+      </concept>
+      <concept id="1107535904670" name="jetbrains.mps.baseLanguage.structure.ClassifierType" flags="in" index="3uibUv">
+        <reference id="1107535924139" name="classifier" index="3uigEE" />
+      </concept>
+      <concept id="1081773326031" name="jetbrains.mps.baseLanguage.structure.BinaryOperation" flags="nn" index="3uHJSO">
+        <child id="1081773367579" name="rightExpression" index="3uHU7w" />
+        <child id="1081773367580" name="leftExpression" index="3uHU7B" />
+      </concept>
+      <concept id="1214918800624" name="jetbrains.mps.baseLanguage.structure.PostfixIncrementExpression" flags="nn" index="3uNrnE" />
+      <concept id="1073239437375" name="jetbrains.mps.baseLanguage.structure.NotEqualsExpression" flags="nn" index="3y3z36" />
+      <concept id="1144230876926" name="jetbrains.mps.baseLanguage.structure.AbstractForStatement" flags="nn" index="1DupvO">
+        <child id="1144230900587" name="variable" index="1Duv9x" />
+      </concept>
+      <concept id="1144231330558" name="jetbrains.mps.baseLanguage.structure.ForStatement" flags="nn" index="1Dw8fO">
+        <child id="1144231399730" name="condition" index="1Dwp0S" />
+        <child id="1144231408325" name="iteration" index="1Dwrff" />
+      </concept>
+    </language>
+    <language id="443f4c36-fcf5-4eb6-9500-8d06ed259e3e" name="jetbrains.mps.baseLanguage.classifiers">
+      <concept id="1205752813637" name="jetbrains.mps.baseLanguage.classifiers.structure.BaseClassifierType" flags="in" index="2WtX_t" />
+      <concept id="1205752906494" name="jetbrains.mps.baseLanguage.classifiers.structure.DefaultClassifierType" flags="in" index="2WukfA" />
+    </language>
+    <language id="3a13115c-633c-4c5c-bbcc-75c4219e9555" name="jetbrains.mps.lang.quotation">
+      <concept id="1196350785110" name="jetbrains.mps.lang.quotation.structure.AbstractAntiquotation" flags="ng" index="2c44t0">
+        <child id="1196350785111" name="expression" index="2c44t1" />
+      </concept>
+      <concept id="1196350785117" name="jetbrains.mps.lang.quotation.structure.ReferenceAntiquotation" flags="ng" index="2c44tb" />
+      <concept id="1196350785113" name="jetbrains.mps.lang.quotation.structure.Quotation" flags="nn" index="2c44tf">
+        <child id="1196350785114" name="quotedNode" index="2c44tc" />
+      </concept>
+    </language>
+    <language id="35320f26-77cb-4c55-be9f-a97a27770af1" name="jetbrains.mps.logic">
+      <concept id="8456919074574710634" name="jetbrains.mps.logic.structure.ExpressionItem" flags="ng" index="37jhX">
+        <child id="8456919074574710741" name="code" index="37jj2" />
+      </concept>
+      <concept id="8169506320648805904" name="jetbrains.mps.logic.structure.LogicalVariableDeclarationContainer" flags="ng" index="29MRiA">
+        <child id="6399471711045617306" name="dataType" index="3vLBG7" />
+        <child id="3063948360254832884" name="declaration" index="3XD1gS" />
+      </concept>
+      <concept id="8829335963593820278" name="jetbrains.mps.logic.structure.LogicalVariable" flags="ng" index="a7P8L">
+        <reference id="8829335963593822893" name="declaration" index="a7OzE" />
+        <child id="6036655413806858011" name="indexExpr" index="3gCZO6" />
+      </concept>
+      <concept id="8829335963591572611" name="jetbrains.mps.logic.structure.LogicalVariableDeclaration" flags="ng" index="aZer4">
+        <child id="6036655413809169524" name="cardinalityExpr" index="3gj$pD" />
+      </concept>
+      <concept id="4780620083400582599" name="jetbrains.mps.logic.structure.LogicalItemExpression" flags="ng" index="1nq8_$">
+        <child id="4780620083400582654" name="logical" index="1nq8_t" />
+      </concept>
+      <concept id="8713947027062024097" name="jetbrains.mps.logic.structure.LogicalItemValueExpression" flags="ng" index="1Ft4W6">
+        <child id="8713947027062064784" name="logical" index="1FtiSR" />
+      </concept>
+    </language>
+    <language id="7866978e-a0f0-4cc7-81bc-4d213d9375e1" name="jetbrains.mps.lang.smodel">
+      <concept id="1177026924588" name="jetbrains.mps.lang.smodel.structure.RefConcept_Reference" flags="nn" index="chp4Y">
+        <reference id="1177026940964" name="conceptDeclaration" index="cht4Q" />
+      </concept>
+      <concept id="1179409122411" name="jetbrains.mps.lang.smodel.structure.Node_ConceptMethodCall" flags="nn" index="2qgKlT" />
+      <concept id="2396822768958367367" name="jetbrains.mps.lang.smodel.structure.AbstractTypeCastExpression" flags="nn" index="$5XWr">
+        <child id="6733348108486823193" name="leftExpression" index="1m5AlR" />
+        <child id="3906496115198199033" name="conceptArgument" index="3oSUPX" />
+      </concept>
+      <concept id="1139621453865" name="jetbrains.mps.lang.smodel.structure.Node_IsInstanceOfOperation" flags="nn" index="1mIQ4w">
+        <child id="1177027386292" name="conceptArgument" index="cj9EA" />
+      </concept>
+      <concept id="1140137987495" name="jetbrains.mps.lang.smodel.structure.SNodeTypeCastExpression" flags="nn" index="1PxgMI" />
+      <concept id="1138055754698" name="jetbrains.mps.lang.smodel.structure.SNodeType" flags="in" index="3Tqbb2">
+        <reference id="1138405853777" name="concept" index="ehGHo" />
+      </concept>
+      <concept id="1138056143562" name="jetbrains.mps.lang.smodel.structure.SLinkAccess" flags="nn" index="3TrEf2">
+        <reference id="1138056516764" name="link" index="3Tt5mk" />
+      </concept>
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+                                <ref role="ehGHo" to="tpee:fz3vP1H" resolve="Type" />
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+                                        <ref role="3A2yKK" node="2q9s7foPerC" resolve="dcmco" />
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+                          <node concept="3A2sRY" id="2q9s7foPvXP" role="2Oq$k0">
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+                  <property role="26X25f" value="4jcOV4hu0n_/ERROR" />
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+          <node concept="3fqX7Q" id="3c0ZDt2oKqA" role="3clFbw">
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+      <node concept="2t___k" id="2q9s7foPerB" role="1nLNMg">
+        <ref role="2t_S0q" to="tp4f:hyXshSD" resolve="DefaultClassifierMethodCallOperation" />
+        <node concept="3A20r5" id="2q9s7foPerC" role="2t_VXX">
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+                <ref role="3A2yKK" node="2q9s7foP$qk" resolve="sce" />
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+              <node concept="2qgKlT" id="2q9s7foP_Gc" role="2OqNvi">
+                <ref role="37wK5l" to="tp4h:hHOIkvz" resolve="getClassifier" />
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+          <node concept="3clFbS" id="2q9s7foP$uj" role="3clFbx">
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+                <node concept="3Aq93q" id="2q9s7foP_HK" role="1nLNMb">
+                  <property role="3ArMco" value="true" />
+                  <node concept="3I6sU6" id="2q9s7foP_HL" role="3Ip0Jz">
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+                              <node concept="2qgKlT" id="2q9s7foPC4d" role="2OqNvi">
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+                    <node concept="Xl_RD" id="hHOIa0R" role="26X25d">
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+        <ref role="2t_S0q" to="tp4f:hHOG3lW" resolve="SuperClassifierExpresson" />
+        <node concept="3A20r5" id="2q9s7foP$qk" role="2t_VXX">
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+              <node concept="3A2sRY" id="2q9s7foPFaC" role="2Oq$k0">
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+                <ref role="37wK5l" to="tp4h:hEwJeDN" resolve="getClassifier" />
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+                <node concept="3Aq93q" id="2q9s7foPF8Q" role="1nLNMb">
+                  <property role="3ArMco" value="true" />
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+      <property role="TrG5h" value="baseClassifierType_convertsTo_baseClassifierType" />
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+            <node concept="3Aq9_M" id="2q9s7fpQht$" role="1nLNMa">
+              <node concept="3I6sU6" id="2q9s7fpQht_" role="3Ip0Jz">
+                <node concept="3I6s7M" id="2q9s7fpQhtH" role="3I6sU7">
+                  <node concept="3wWvb2" id="2q9s7fpQhtF" role="3I6s78">
+                    <node concept="2OqwBi" id="2q9s7fpQhBX" role="3wWo3s">
+                      <node concept="1Ft4W6" id="2q9s7fpQhtQ" role="2Oq$k0">
+                        <node concept="a7P8L" id="2q9s7fpQhtP" role="1FtiSR">
+                          <ref role="a7OzE" node="2q9s7foPyQY" resolve="Opt" />
+                        </node>
+                      </node>
+                      <node concept="liA8E" id="2q9s7fpQhNl" role="2OqNvi">
+                        <ref role="37wK5l" to="kqnc:4O7HczO6zx9" resolve="isInfer" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1nLNMY" id="2q9s7fpQhpA" role="1nK1Vg">
+      <property role="TrG5h" value="baseClassifierType_convertsTo_Object" />
+      <node concept="3clFbS" id="2q9s7fpQhpB" role="1nLNMH">
+        <node concept="1nLNNL" id="2q9s7fpQhpC" role="3cqZAp">
+          <node concept="1nLNMm" id="2q9s7fpQhpD" role="1nLNNK">
+            <node concept="3Aq93q" id="2q9s7fpQhpE" role="1nLNMb">
+              <node concept="3I6sU6" id="2q9s7fpQhpF" role="3Ip0Jz">
+                <node concept="3I6s7M" id="2q9s7fpQhpG" role="3I6sU7">
+                  <node concept="3Aqt3T" id="2q9s7fpQhpH" role="3I6s78">
+                    <ref role="3AqCNq" to="kqnc:3vTJNooZDgN" resolve="convertsTo" />
+                    <node concept="1HFMs5" id="2q9s7fpQhpI" role="3AunhB">
+                      <node concept="a7P8L" id="2q9s7fpQhpJ" role="1uarlU">
+                        <ref role="a7OzE" node="2q9s7fpQhpO" resolve="BCT" />
+                      </node>
+                      <node concept="ns1u0" id="2q9s7fpQhpK" role="1uarlW">
+                        <ref role="ns1xF" node="2q9s7foPy7G" resolve="baseClassifier" />
+                      </node>
+                    </node>
+                    <node concept="a7P8L" id="2q9s7fpQhpL" role="3AunhB">
+                      <ref role="a7OzE" node="2q9s7fpQhpP" resolve="SuperT" />
+                    </node>
+                    <node concept="a7P8L" id="2q9s7fpQhpM" role="3AunhB">
+                      <ref role="a7OzE" node="2q9s7fpQhpS" resolve="Opt" />
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3NuqgR" id="2q9s7fpQhpN" role="0Rg$4">
+              <node concept="aZer4" id="2q9s7fpQhpO" role="3XD1gS">
+                <property role="TrG5h" value="BCT" />
+              </node>
+              <node concept="aZer4" id="2q9s7fpQhpP" role="3XD1gS">
+                <property role="TrG5h" value="SuperT" />
+              </node>
+              <node concept="32pEOW" id="2q9s7fpQhpQ" role="3vLBG7" />
+            </node>
+            <node concept="3NuqgR" id="2q9s7fpQhpR" role="0Rg$4">
+              <node concept="aZer4" id="2q9s7fpQhpS" role="3XD1gS">
+                <property role="TrG5h" value="Opt" />
+              </node>
+              <node concept="3uibUv" id="2q9s7fpQhpT" role="3vLBG7">
+                <ref role="3uigEE" to="kqnc:3vTJNooZBhQ" resolve="ConvertsContext.Options" />
+              </node>
+            </node>
+            <node concept="3xSepi" id="2q9s7fpQhpU" role="3xSepv">
+              <node concept="3Aq9E8" id="2q9s7fpQhpV" role="3xSepj">
+                <node concept="3I6sU6" id="2q9s7fpQhpW" role="3Ip0Jz">
+                  <node concept="3I6s7M" id="2q9s7fpQhpX" role="3I6sU7">
+                    <node concept="3Aqt3T" id="2q9s7fpQhpY" role="3I6s78">
+                      <ref role="3AqCNq" to="kqnc:3vTJNooZDgN" resolve="convertsTo" />
+                      <node concept="ns1u0" id="2q9s7fpQhpZ" role="3AunhB">
+                        <ref role="ns1xF" to="kqnc:JOGAOsVt2a" resolve="classifier" />
+                        <node concept="nsMwS" id="2q9s7fpQhq0" role="ns1xD">
+                          <ref role="nsMwP" to="kqnc:JOGAOsVt2c" resolve="classifier" />
+                          <node concept="2OqwBi" id="2q9s7fpQhq1" role="nsMwV">
+                            <node concept="2c44tf" id="2q9s7fpQhq2" role="2Oq$k0">
+                              <node concept="3uibUv" id="2q9s7fpQhq3" role="2c44tc">
+                                <ref role="3uigEE" to="wyt6:~Object" resolve="Object" />
+                              </node>
+                            </node>
+                            <node concept="3TrEf2" id="2q9s7fpQhq4" role="2OqNvi">
+                              <ref role="3Tt5mk" to="tpee:g7uigIF" resolve="classifier" />
+                            </node>
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="a7P8L" id="2q9s7fpQhq5" role="3AunhB">
+                        <ref role="a7OzE" node="2q9s7fpQhpP" resolve="SuperT" />
+                      </node>
+                      <node concept="a7P8L" id="2q9s7fpQhq6" role="3AunhB">
+                        <ref role="a7OzE" node="2q9s7fpQhpS" resolve="Opt" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
+  <node concept="0oKg$" id="2q9s7foUKVD">
+    <property role="TrG5h" value="Types" />
+    <ref role="3tg4Y$" to="kqnc:E1U1n2RerB" resolve="Types" />
+    <node concept="3iyZe8" id="2q9s7foULiO" role="0oKgB">
+      <ref role="3iRiWT" to="kqnc:5itBwMau8m1" resolve="lift" />
+      <node concept="3clFbS" id="2q9s7foULiP" role="3iwQuN">
+        <node concept="3Aqczg" id="2q9s7foULTF" role="3cqZAp">
+          <node concept="3A8Hvi" id="2q9s7foULTC" role="3Aqpz8">
+            <node concept="a7P8L" id="2q9s7foULTP" role="3A8wtg">
+              <ref role="a7OzE" node="2q9s7foULiS" resolve="Type" />
+            </node>
+            <node concept="ns1u0" id="2q9s7foULVv" role="3A8w4Q">
+              <ref role="ns1xF" node="2q9s7foUKiD" resolve="defaultClassifier" />
+              <node concept="nsMwS" id="2q9s7foULVF" role="ns1xD">
+                <ref role="nsMwP" node="2q9s7foUKjg" resolve="classifier" />
+                <node concept="2OqwBi" id="2q9s7foULXk" role="nsMwV">
+                  <node concept="3j8tct" id="2q9s7foULX0" role="2Oq$k0">
+                    <ref role="3j8tcu" node="2q9s7foULiU" resolve="dc" />
+                  </node>
+                  <node concept="3TrEf2" id="2q9s7foUM_k" role="2OqNvi">
+                    <ref role="3Tt5mk" to="tp4f:hyWumMg" resolve="classifier" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3uniRu" id="2q9s7foULiQ" role="3tb1AD">
+        <node concept="32pEOW" id="2q9s7foULiR" role="3vLBG7" />
+        <node concept="aZer4" id="2q9s7foULiS" role="3XD1gS">
+          <property role="TrG5h" value="Type" />
+        </node>
+      </node>
+      <node concept="3ixlbQ" id="2q9s7foULiT" role="3iweTQ">
+        <ref role="3ixz9q" to="tp4f:hyWukbY" resolve="DefaultClassifierType" />
+        <node concept="3ixQyH" id="2q9s7foULiU" role="3ix8rx">
+          <property role="TrG5h" value="dc" />
+        </node>
+      </node>
+    </node>
+    <node concept="3iyZe8" id="2q9s7fpPily" role="0oKgB">
+      <ref role="3iRiWT" to="kqnc:5itBwMau8m1" resolve="lift" />
+      <node concept="3clFbS" id="2q9s7fpPilz" role="3iwQuN">
+        <node concept="3Aqczg" id="2q9s7fpPj4n" role="3cqZAp">
+          <node concept="3A8Hvi" id="2q9s7fpPj4k" role="3Aqpz8">
+            <node concept="a7P8L" id="2q9s7fpPj4x" role="3A8wtg">
+              <ref role="a7OzE" node="2q9s7fpPilA" resolve="Type" />
+            </node>
+            <node concept="ns1u0" id="2q9s7fpPj4H" role="3A8w4Q">
+              <ref role="ns1xF" node="2q9s7foPy7G" resolve="baseClassifier" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3uniRu" id="2q9s7fpPil$" role="3tb1AD">
+        <node concept="32pEOW" id="2q9s7fpPil_" role="3vLBG7" />
+        <node concept="aZer4" id="2q9s7fpPilA" role="3XD1gS">
+          <property role="TrG5h" value="Type" />
+        </node>
+      </node>
+      <node concept="3ixlbQ" id="2q9s7fpPilB" role="3iweTQ">
+        <ref role="3ixz9q" to="tp4f:hyWtXx5" resolve="BaseClassifierType" />
+        <node concept="3ixQyH" id="2q9s7fpPilC" role="3ix8rx">
+          <property role="TrG5h" value="bc" />
+        </node>
+      </node>
+    </node>
+  </node>
+  <node concept="AVZre" id="2q9s7foUOwF">
+    <property role="TrG5h" value="Recover" />
+    <ref role="2YbDB9" to="kqnc:6Qzc0KyJGzD" resolve="Recover" />
+    <node concept="1nLNMY" id="2q9s7foUOEl" role="1nK1Vg">
+      <property role="TrG5h" value="recover_defaultClassifierType" />
+      <node concept="3clFbS" id="2q9s7foUOEm" role="1nLNMH">
+        <node concept="1nLNNL" id="2q9s7foUOF6" role="3cqZAp">
+          <node concept="1nLNMm" id="2q9s7foUOF8" role="1nLNNK">
+            <node concept="3Aq93q" id="2q9s7foUOFf" role="1nLNMb">
+              <node concept="3I6sU6" id="2q9s7foUOFg" role="3Ip0Jz">
+                <node concept="3I6s7M" id="2q9s7foUOFn" role="3I6sU7">
+                  <node concept="3Aqt3T" id="2q9s7foUOFm" role="3I6s78">
+                    <ref role="3AqCNq" to="kqnc:6Qzc0KyJGJT" resolve="recover" />
+                    <node concept="a7P8L" id="2q9s7foUPkh" role="3AunhB">
+                      <ref role="a7OzE" node="2q9s7foUPja" resolve="Node" />
+                    </node>
+                    <node concept="1HFMs5" id="2q9s7foUPkY" role="3AunhB">
+                      <node concept="a7P8L" id="2q9s7foUPkE" role="1uarlU">
+                        <ref role="a7OzE" node="2q9s7foUPj$" resolve="T" />
+                      </node>
+                      <node concept="ns1u0" id="2q9s7foUPlo" role="1uarlW">
+                        <ref role="ns1xF" node="2q9s7foUKiD" resolve="defaultClassifier" />
+                        <node concept="nsMwS" id="2q9s7foUPlH" role="ns1xD">
+                          <ref role="nsMwP" node="2q9s7foUKjg" resolve="classifier" />
+                          <node concept="1nq8_$" id="2q9s7foUPmo" role="nsMwV">
+                            <node concept="a7P8L" id="2q9s7foUPmn" role="1nq8_t">
+                              <ref role="a7OzE" node="2q9s7foUPm8" resolve="Cls" />
+                            </node>
+                          </node>
+                        </node>
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3NuqgR" id="2q9s7foUPj9" role="0Rg$4">
+              <node concept="aZer4" id="2q9s7foUPja" role="3XD1gS">
+                <property role="TrG5h" value="Node" />
+              </node>
+              <node concept="aZer4" id="2q9s7foUPm8" role="3XD1gS">
+                <property role="TrG5h" value="Cls" />
+              </node>
+              <node concept="3Tqbb2" id="2q9s7foUPjk" role="3vLBG7" />
+            </node>
+            <node concept="3NuqgR" id="2q9s7foUPjz" role="0Rg$4">
+              <node concept="aZer4" id="2q9s7foUPj$" role="3XD1gS">
+                <property role="TrG5h" value="T" />
+              </node>
+              <node concept="32pEOW" id="2q9s7foUPjL" role="3vLBG7" />
+            </node>
+            <node concept="3xSepi" id="2q9s7foUPmU" role="3xSepv">
+              <node concept="3Aq9E8" id="2q9s7foUPmV" role="3xSepj">
+                <node concept="3I6sU6" id="2q9s7foUPmW" role="3Ip0Jz">
+                  <node concept="3I6s7M" id="2q9s7foUPni" role="3I6sU7">
+                    <node concept="3A8Hvi" id="2q9s7foUPno" role="3I6s78">
+                      <node concept="HKQnh" id="2q9s7foUPnK" role="3A8w4Q">
+                        <node concept="2c44tf" id="2q9s7foUPo1" role="HKQng">
+                          <node concept="2WukfA" id="2q9s7foUPFU" role="2c44tc">
+                            <node concept="2c44tb" id="2q9s7foUQ7c" role="lGtFl">
+                              <property role="2qtEX8" value="classifier" />
+                              <property role="P3scX" value="443f4c36-fcf5-4eb6-9500-8d06ed259e3e/1205752906494/1205752917136" />
+                              <node concept="1Ft4W6" id="2q9s7foUQ7k" role="2c44t1">
+                                <node concept="a7P8L" id="2q9s7foUQ7j" role="1FtiSR">
+                                  <ref role="a7OzE" node="2q9s7foUPm8" resolve="Cls" />
+                                </node>
+                              </node>
+                            </node>
+                          </node>
+                        </node>
+                      </node>
+                      <node concept="a7P8L" id="2q9s7foUPn3" role="3A8wtg">
+                        <ref role="a7OzE" node="2q9s7foUPja" resolve="Node" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+    <node concept="1nLNMY" id="2q9s7fpPmBn" role="1nK1Vg">
+      <property role="TrG5h" value="recover_baseClassifierType" />
+      <node concept="3clFbS" id="2q9s7fpPmBo" role="1nLNMH">
+        <node concept="1nLNNL" id="2q9s7fpPmCf" role="3cqZAp">
+          <node concept="1nLNMm" id="2q9s7fpPmCg" role="1nLNNK">
+            <node concept="3Aq93q" id="2q9s7fpPmCm" role="1nLNMb">
+              <node concept="3I6sU6" id="2q9s7fpPmCn" role="3Ip0Jz">
+                <node concept="3I6s7M" id="2q9s7fpPmCu" role="3I6sU7">
+                  <node concept="3Aqt3T" id="2q9s7fpPmCt" role="3I6s78">
+                    <ref role="3AqCNq" to="kqnc:6Qzc0KyJGJT" resolve="recover" />
+                    <node concept="a7P8L" id="2q9s7fpPmDw" role="3AunhB">
+                      <ref role="a7OzE" node="2q9s7fpPmCA" resolve="Node" />
+                    </node>
+                    <node concept="1HFMs5" id="2q9s7fpPmEh" role="3AunhB">
+                      <node concept="a7P8L" id="2q9s7fpPmDX" role="1uarlU">
+                        <ref role="a7OzE" node="2q9s7fpPmD0" resolve="T" />
+                      </node>
+                      <node concept="ns1u0" id="2q9s7fpPmEF" role="1uarlW">
+                        <ref role="ns1xF" node="2q9s7foPy7G" resolve="baseClassifier" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+            <node concept="3NuqgR" id="2q9s7fpPmC_" role="0Rg$4">
+              <node concept="aZer4" id="2q9s7fpPmCA" role="3XD1gS">
+                <property role="TrG5h" value="Node" />
+              </node>
+              <node concept="3Tqbb2" id="2q9s7fpPmCK" role="3vLBG7" />
+            </node>
+            <node concept="3NuqgR" id="2q9s7fpPmCZ" role="0Rg$4">
+              <node concept="aZer4" id="2q9s7fpPmD0" role="3XD1gS">
+                <property role="TrG5h" value="T" />
+              </node>
+              <node concept="32pEOW" id="2q9s7fpPmDd" role="3vLBG7" />
+            </node>
+            <node concept="3xSepi" id="2q9s7fpPmF0" role="3xSepv">
+              <node concept="3Aq9E8" id="2q9s7fpPmF1" role="3xSepj">
+                <node concept="3I6sU6" id="2q9s7fpPmF2" role="3Ip0Jz">
+                  <node concept="3I6s7M" id="2q9s7fpPmFx" role="3I6sU7">
+                    <node concept="3A8Hvi" id="2q9s7fpPmFB" role="3I6s78">
+                      <node concept="HKQnh" id="2q9s7fpPmFZ" role="3A8w4Q">
+                        <node concept="2c44tf" id="2q9s7fpPmGC" role="HKQng">
+                          <node concept="2WtX_t" id="2q9s7fpPmGS" role="2c44tc" />
+                        </node>
+                      </node>
+                      <node concept="a7P8L" id="2q9s7fpPmF9" role="3A8wtg">
+                        <ref role="a7OzE" node="2q9s7fpPmCA" resolve="Node" />
+                      </node>
+                    </node>
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
+  </node>
+</model>
+
diff --git a/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.typesystem.mps b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.typesystem.mps
new file mode 100644
index 00000000..a81ed525
--- /dev/null
+++ b/samples/mpscore/languages/jetbrains.mps.baseLanguage.classifiersExt/models/jetbrains.mps.baseLanguage.classifiersExt.typesystem.mps
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<model ref="r:4c679b31-5fdd-41fc-add2-132c0ed1a46f(jetbrains.mps.baseLanguage.classifiersExt.typesystem)">
+  <persistence version="9" />
+  <languages>
+    <use id="7a5dda62-9140-4668-ab76-d5ed1746f2b2" name="jetbrains.mps.lang.typesystem" version="5" />
+    <devkit ref="00000000-0000-4000-0000-1de82b3a4936(jetbrains.mps.devkit.aspect.typesystem)" />
+  </languages>
+  <imports />
+  <registry />
+</model>
+
diff --git a/samples/mpscore/solutions/samples.mpscore.build/models/samples.mpscore.build.mps b/samples/mpscore/solutions/samples.mpscore.build/models/samples.mpscore.build.mps
index 35132f33..9d50fb24 100644
--- a/samples/mpscore/solutions/samples.mpscore.build/models/samples.mpscore.build.mps
+++ b/samples/mpscore/solutions/samples.mpscore.build/models/samples.mpscore.build.mps
@@ -1946,6 +1946,16 @@
             <ref role="3bR37D" to="ffeo:7Kfy9QB6L2N" resolve="jetbrains.mps.baseLanguage.tuples.runtime" />
           </node>
         </node>
+        <node concept="1SiIV0" id="1tzntNAo2P1" role="3bR37C">
+          <node concept="3bR9La" id="1tzntNAo2P2" role="1SiIV1">
+            <ref role="3bR37D" to="ffeo:7Kfy9QB6L4p" resolve="jetbrains.mps.lang.behavior" />
+          </node>
+        </node>
+        <node concept="1SiIV0" id="1tzntNAo2P3" role="3bR37C">
+          <node concept="3bR9La" id="1tzntNAo2P4" role="1SiIV1">
+            <ref role="3bR37D" node="6Dg__VJQ3B2" resolve="jetbrains.mps.lang.smodelExt" />
+          </node>
+        </node>
       </node>
       <node concept="1E1JtA" id="3mSr9E04JGq" role="2G$12L">
         <property role="BnDLt" value="true" />