diff --git a/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample.test/models/jetbrains/mps/lang/typesystem2/sample/bounds@tests.mps b/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample.test/models/jetbrains/mps/lang/typesystem2/sample/bounds@tests.mps
index 811f6687..e2d9766d 100644
--- a/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample.test/models/jetbrains/mps/lang/typesystem2/sample/bounds@tests.mps
+++ b/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample.test/models/jetbrains/mps/lang/typesystem2/sample/bounds@tests.mps
@@ -104,6 +104,14 @@
         </node>
       </node>
     </node>
+    <node concept="1qefOq" id="5DSQNPPS8V8" role="1SKRRt">
+      <node concept="3uibUv" id="5DSQNPPS8V9" role="1qenE9">
+        <ref role="3uigEE" to="f6t6:3yhgKRJ29Qs" resolve="Variance" />
+        <node concept="3xLA65" id="5DSQNPPS8Va" role="lGtFl">
+          <property role="TrG5h" value="Test_Variance" />
+        </node>
+      </node>
+    </node>
     <node concept="1LZb2c" id="1N_0WA5DT8G" role="1SL9yI">
       <property role="TrG5h" value="Sample" />
       <node concept="3cqZAl" id="1N_0WA5DT8H" role="3clF45" />
@@ -156,6 +164,32 @@
         </node>
       </node>
     </node>
+    <node concept="1LZb2c" id="5DSQNPPS8E8" role="1SL9yI">
+      <property role="TrG5h" value="Variance" />
+      <node concept="3cqZAl" id="5DSQNPPS8E9" role="3clF45" />
+      <node concept="3clFbS" id="5DSQNPPS8Ea" role="3clF47">
+        <node concept="3ykFI1" id="5DSQNPPS8Eb" role="3cqZAp">
+          <node concept="2YIFZM" id="5DSQNPPS8Ec" role="3ykU8v">
+            <ref role="1Pybhc" to="84wp:1N_0WA5JxZO" resolve="LaunchTypechecking" />
+            <ref role="37wK5l" to="84wp:1N_0WA5Jy0j" resolve="typecheckingErrors" />
+            <node concept="2OqwBi" id="5DSQNPPS8Ed" role="37wK5m">
+              <node concept="3xONca" id="5DSQNPPS96G" role="2Oq$k0">
+                <ref role="3xOPvv" node="5DSQNPPS8Va" resolve="Test_Variance" />
+              </node>
+              <node concept="3TrEf2" id="5DSQNPPS8Ef" role="2OqNvi">
+                <ref role="3Tt5mk" to="tpee:g7uigIF" />
+              </node>
+            </node>
+            <node concept="1jxXqW" id="5DSQNPPS8Eg" role="37wK5m" />
+          </node>
+          <node concept="3_1$Yv" id="5DSQNPPS8Eh" role="3_9lra">
+            <node concept="Xl_RD" id="5DSQNPPS8Ei" role="3_1BAH">
+              <property role="Xl_RC" value="error while typechecking" />
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
   </node>
   <node concept="2XOHcx" id="1N_0WA5DT60">
     <property role="2XOHcw" value="${mps_home}" />
diff --git a/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample/models/jetbrains/mps/lang/typesystem2/sample/bounds.mps b/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample/models/jetbrains/mps/lang/typesystem2/sample/bounds.mps
index b60ec5ca..705a5ae1 100644
--- a/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample/models/jetbrains/mps/lang/typesystem2/sample/bounds.mps
+++ b/typechecking/solutions/jetbrains.mps.lang.typesystem2.sample/models/jetbrains/mps/lang/typesystem2/sample/bounds.mps
@@ -4,7 +4,9 @@
   <languages>
     <use id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage" version="4" />
   </languages>
-  <imports />
+  <imports>
+    <import index="wyt6" ref="6354ebe7-c22a-4a0f-ac54-50b52ab9b065/java:java.lang(JDK/)" implicit="true" />
+  </imports>
   <registry>
     <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
       <concept id="1215693861676" name="jetbrains.mps.baseLanguage.structure.BaseAssignmentExpression" flags="nn" index="d038R">
@@ -112,9 +114,19 @@
       <concept id="1146644623116" name="jetbrains.mps.baseLanguage.structure.PrivateVisibility" flags="nn" index="3Tm6S6" />
     </language>
     <language id="ceab5195-25ea-4f22-9b92-103b95ca8c0c" name="jetbrains.mps.lang.core">
+      <concept id="1133920641626" name="jetbrains.mps.lang.core.structure.BaseConcept" flags="ng" index="2VYdi">
+        <child id="5169995583184591170" name="smodelAttribute" index="lGtFl" />
+      </concept>
       <concept id="1169194658468" name="jetbrains.mps.lang.core.structure.INamedConcept" flags="ng" index="TrEIO">
         <property id="1169194664001" name="name" index="TrG5h" />
       </concept>
+      <concept id="709746936026466394" name="jetbrains.mps.lang.core.structure.ChildAttribute" flags="ng" index="3VBwX9">
+        <property id="709746936026609031" name="linkId" index="3V$3ak" />
+        <property id="709746936026609029" name="linkRole" index="3V$3am" />
+      </concept>
+      <concept id="4452961908202556907" name="jetbrains.mps.lang.core.structure.BaseCommentAttribute" flags="ng" index="1X3_iC">
+        <child id="3078666699043039389" name="commentedNode" index="8Wnug" />
+      </concept>
     </language>
   </registry>
   <node concept="312cEu" id="5s497Vrh6EY">
@@ -139,6 +151,18 @@
     <node concept="312cEu" id="5s497Vrh7RM" role="jymVt">
       <property role="2bfB8j" value="true" />
       <property role="TrG5h" value="B" />
+      <node concept="3clFb_" id="3yhgKRJ2eLU" role="jymVt">
+        <property role="TrG5h" value="b" />
+        <node concept="3uibUv" id="3yhgKRJ2f4c" role="3clF45">
+          <ref role="3uigEE" node="5s497Vrh7RM" resolve="Sample.B" />
+        </node>
+        <node concept="3Tm6S6" id="3yhgKRJ2eLX" role="1B3o_S" />
+        <node concept="3clFbS" id="3yhgKRJ2eLY" role="3clF47">
+          <node concept="3clFbF" id="3yhgKRJ2fAl" role="3cqZAp">
+            <node concept="Xjq3P" id="3yhgKRJ2fAk" role="3clFbG" />
+          </node>
+        </node>
+      </node>
       <node concept="3Tm6S6" id="1UWNDKzpzt7" role="1B3o_S" />
       <node concept="3uibUv" id="5s497Vrh7RO" role="1zkMxy">
         <ref role="3uigEE" node="5s497Vrh7RG" resolve="Sample.A" />
@@ -153,7 +177,7 @@
         <property role="TrG5h" value="t" />
         <property role="3TUv4t" value="false" />
         <node concept="16syzq" id="5s497Vrh7RR" role="1tU5fm">
-          <ref role="16sUi3" node="5s497Vrh7S1" resolve="T" />
+          <ref role="16sUi3" node="5s497Vrh7S1" resolve="T1" />
         </node>
       </node>
       <node concept="3clFb_" id="5s497Vrh7RS" role="jymVt">
@@ -163,7 +187,7 @@
           <node concept="3uibUv" id="5s497Vrh7RU" role="11_B2D">
             <ref role="3uigEE" node="5s497Vrh7RP" resolve="Sample.J" />
             <node concept="16syzq" id="5s497Vrh7RV" role="11_B2D">
-              <ref role="16sUi3" node="5s497Vrh7S1" resolve="T" />
+              <ref role="16sUi3" node="5s497Vrh7S1" resolve="T1" />
             </node>
           </node>
         </node>
@@ -175,7 +199,7 @@
       </node>
       <node concept="3Tm6S6" id="1UWNDKzpzBJ" role="1B3o_S" />
       <node concept="16euLQ" id="5s497Vrh7S1" role="16eVyc">
-        <property role="TrG5h" value="T" />
+        <property role="TrG5h" value="T1" />
         <node concept="3uibUv" id="5s497Vrh7S2" role="3ztrMU">
           <ref role="3uigEE" node="5s497Vrh7RG" resolve="Sample.A" />
         </node>
@@ -197,7 +221,7 @@
       <property role="TrG5h" value="H" />
       <node concept="3Tm6S6" id="1UWNDKzp$1q" role="1B3o_S" />
       <node concept="16euLQ" id="5s497Vrh7S9" role="16eVyc">
-        <property role="TrG5h" value="T" />
+        <property role="TrG5h" value="T2" />
       </node>
     </node>
     <node concept="312cEu" id="5s497Vrh7Sa" role="jymVt">
@@ -213,14 +237,14 @@
               <node concept="3uibUv" id="5s497Vrh7Sf" role="3qUE_r">
                 <ref role="3uigEE" node="5s497Vrh7RP" resolve="Sample.J" />
                 <node concept="16syzq" id="5s497Vrh7Sg" role="11_B2D">
-                  <ref role="16sUi3" node="5s497Vrh7Sm" resolve="T" />
+                  <ref role="16sUi3" node="5s497Vrh7Sm" resolve="T3" />
                 </node>
               </node>
             </node>
           </node>
         </node>
         <node concept="16syzq" id="5s497Vrh7Sh" role="3clF45">
-          <ref role="16sUi3" node="5s497Vrh7Sm" resolve="T" />
+          <ref role="16sUi3" node="5s497Vrh7Sm" resolve="T3" />
         </node>
         <node concept="3clFbS" id="5s497Vrh7Sj" role="3clF47">
           <node concept="3clFbF" id="5s497Vrh7Sk" role="3cqZAp">
@@ -228,7 +252,7 @@
           </node>
         </node>
         <node concept="16euLQ" id="5s497Vrh7Sm" role="16eVyc">
-          <property role="TrG5h" value="T" />
+          <property role="TrG5h" value="T3" />
           <node concept="3uibUv" id="5s497Vrh7Sn" role="3ztrMU">
             <ref role="3uigEE" node="5s497Vrh7RG" resolve="Sample.A" />
           </node>
@@ -241,12 +265,12 @@
           <node concept="3uibUv" id="5PpdwMfGv9z" role="1tU5fm">
             <ref role="3uigEE" node="5s497Vrh7S7" resolve="Sample.H" />
             <node concept="16syzq" id="5PpdwMfGvdX" role="11_B2D">
-              <ref role="16sUi3" node="5PpdwMfGub8" resolve="S" />
+              <ref role="16sUi3" node="5PpdwMfGub8" resolve="S1" />
             </node>
           </node>
         </node>
         <node concept="16syzq" id="5PpdwMfGuBt" role="3clF45">
-          <ref role="16sUi3" node="5PpdwMfGtRn" resolve="T" />
+          <ref role="16sUi3" node="5PpdwMfGtRn" resolve="T4" />
         </node>
         <node concept="3clFbS" id="5PpdwMfGszK" role="3clF47">
           <node concept="3clFbF" id="5PpdwMfGtzE" role="3cqZAp">
@@ -254,18 +278,18 @@
           </node>
         </node>
         <node concept="16euLQ" id="5PpdwMfGtRn" role="16eVyc">
-          <property role="TrG5h" value="T" />
+          <property role="TrG5h" value="T4" />
           <node concept="3uibUv" id="5PpdwMfGuaf" role="3ztrMU">
             <ref role="3uigEE" node="5s497Vrh7RM" resolve="Sample.B" />
           </node>
         </node>
         <node concept="16euLQ" id="5PpdwMfGub8" role="16eVyc">
-          <property role="TrG5h" value="S" />
+          <property role="TrG5h" value="S1" />
           <node concept="3uibUv" id="5PpdwMfGuuS" role="3ztrMU">
             <ref role="3uigEE" node="5s497Vrh7RP" resolve="Sample.J" />
             <node concept="3qUtgH" id="5PpdwMfGuy4" role="11_B2D">
               <node concept="16syzq" id="5PpdwMfGuz8" role="3qUvdb">
-                <ref role="16sUi3" node="5PpdwMfGtRn" resolve="T" />
+                <ref role="16sUi3" node="5PpdwMfGtRn" resolve="T4" />
               </node>
             </node>
           </node>
@@ -461,18 +485,18 @@
         </node>
         <node concept="3Tm1VV" id="5s497Vrh7T5" role="1B3o_S" />
         <node concept="16euLQ" id="5s497Vrh7T6" role="16eVyc">
-          <property role="TrG5h" value="T" />
+          <property role="TrG5h" value="T5" />
           <node concept="3uibUv" id="5s497Vrh7T7" role="3ztrMU">
             <ref role="3uigEE" node="5s497Vrh7RM" resolve="Sample.B" />
           </node>
         </node>
         <node concept="16euLQ" id="5s497Vrh7T8" role="16eVyc">
-          <property role="TrG5h" value="S" />
+          <property role="TrG5h" value="S2" />
           <node concept="3uibUv" id="5s497Vrh7T9" role="3ztrMU">
             <ref role="3uigEE" node="5s497Vrh7RP" resolve="Sample.J" />
             <node concept="3qUtgH" id="5s497Vrh7Ta" role="11_B2D">
               <node concept="16syzq" id="5s497Vrh7Tb" role="3qUvdb">
-                <ref role="16sUi3" node="5s497Vrh7T6" resolve="T" />
+                <ref role="16sUi3" node="5s497Vrh7T6" resolve="T5" />
               </node>
             </node>
           </node>
@@ -480,7 +504,7 @@
         <node concept="37vLTG" id="5s497Vrh7Tc" role="3clF46">
           <property role="TrG5h" value="s" />
           <node concept="16syzq" id="5s497Vrh7Td" role="1tU5fm">
-            <ref role="16sUi3" node="5s497Vrh7T8" resolve="S" />
+            <ref role="16sUi3" node="5s497Vrh7T8" resolve="S2" />
           </node>
         </node>
         <node concept="37vLTG" id="5s497Vrh7Te" role="3clF46">
@@ -632,5 +656,1102 @@
     </node>
     <node concept="2tJIrI" id="2U6QFnZujkZ" role="jymVt" />
   </node>
+  <node concept="312cEu" id="3yhgKRJ29Qs">
+    <property role="TrG5h" value="Variance" />
+    <node concept="2tJIrI" id="3yhgKRJ29RA" role="jymVt" />
+    <node concept="312cEu" id="3yhgKRJ29TR" role="jymVt">
+      <property role="2bfB8j" value="false" />
+      <property role="TrG5h" value="A" />
+      <node concept="3Tm1VV" id="3yhgKRJ29TS" role="1B3o_S" />
+    </node>
+    <node concept="2tJIrI" id="3yhgKRJ29Ve" role="jymVt" />
+    <node concept="312cEu" id="3yhgKRJ29UJ" role="jymVt">
+      <property role="2bfB8j" value="false" />
+      <property role="TrG5h" value="B" />
+      <node concept="3Tm1VV" id="3yhgKRJ29UK" role="1B3o_S" />
+      <node concept="3uibUv" id="3yhgKRJ29VY" role="1zkMxy">
+        <ref role="3uigEE" node="3yhgKRJ29TR" resolve="Variance.A" />
+      </node>
+    </node>
+    <node concept="2tJIrI" id="3yhgKRJ2l97" role="jymVt" />
+    <node concept="312cEu" id="3yhgKRJ2l1E" role="jymVt">
+      <property role="2bfB8j" value="false" />
+      <property role="TrG5h" value="C" />
+      <node concept="3Tm1VV" id="3yhgKRJ2l1F" role="1B3o_S" />
+      <node concept="3uibUv" id="3yhgKRJ2lgs" role="1zkMxy">
+        <ref role="3uigEE" node="3yhgKRJ29UJ" resolve="Variance.B" />
+      </node>
+    </node>
+    <node concept="2tJIrI" id="3yhgKRJ29Tk" role="jymVt" />
+    <node concept="312cEu" id="3yhgKRJ29XW" role="jymVt">
+      <property role="2bfB8j" value="false" />
+      <property role="TrG5h" value="Foo" />
+      <node concept="3clFb_" id="3yhgKRJ2a9H" role="jymVt">
+        <property role="TrG5h" value="get" />
+        <node concept="16syzq" id="3yhgKRJ2aaR" role="3clF45">
+          <ref role="16sUi3" node="3yhgKRJ29Z1" resolve="T" />
+        </node>
+        <node concept="3Tm1VV" id="3yhgKRJ2a9K" role="1B3o_S" />
+        <node concept="3clFbS" id="3yhgKRJ2a9L" role="3clF47">
+          <node concept="3clFbF" id="3yhgKRJ2adg" role="3cqZAp">
+            <node concept="10Nm6u" id="3yhgKRJ2adf" role="3clFbG" />
+          </node>
+        </node>
+      </node>
+      <node concept="3clFb_" id="3yhgKRJ2anm" role="jymVt">
+        <property role="TrG5h" value="set" />
+        <node concept="3cqZAl" id="3yhgKRJ2ano" role="3clF45" />
+        <node concept="3Tm1VV" id="3yhgKRJ2anp" role="1B3o_S" />
+        <node concept="3clFbS" id="3yhgKRJ2anq" role="3clF47" />
+        <node concept="37vLTG" id="3yhgKRJ2arh" role="3clF46">
+          <property role="TrG5h" value="t" />
+          <node concept="16syzq" id="3yhgKRJ2arg" role="1tU5fm">
+            <ref role="16sUi3" node="3yhgKRJ29Z1" resolve="T" />
+          </node>
+        </node>
+      </node>
+      <node concept="3Tm1VV" id="3yhgKRJ29XX" role="1B3o_S" />
+      <node concept="16euLQ" id="3yhgKRJ29Z1" role="16eVyc">
+        <property role="TrG5h" value="T" />
+      </node>
+    </node>
+    <node concept="2tJIrI" id="3yhgKRJ29Xx" role="jymVt" />
+    <node concept="3clFb_" id="3yhgKRJ29RU" role="jymVt">
+      <property role="TrG5h" value="test0" />
+      <node concept="37vLTG" id="3yhgKRJ29Zj" role="3clF46">
+        <property role="TrG5h" value="param" />
+        <node concept="3uibUv" id="3yhgKRJ29ZB" role="1tU5fm">
+          <ref role="3uigEE" node="3yhgKRJ29XW" resolve="Variance.Foo" />
+          <node concept="3qUE_q" id="3yhgKRJ2z3R" role="11_B2D">
+            <node concept="3uibUv" id="3yhgKRJ2z91" role="3qUE_r">
+              <ref role="3uigEE" node="3yhgKRJ29TR" resolve="Variance.A" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3cqZAl" id="3yhgKRJ29RW" role="3clF45" />
+      <node concept="3Tm1VV" id="3yhgKRJ29RX" role="1B3o_S" />
+      <node concept="3clFbS" id="3yhgKRJ29RY" role="3clF47">
+        <node concept="3cpWs8" id="3yhgKRJ2a3I" role="3cqZAp">
+          <node concept="3cpWsn" id="3yhgKRJ2a3J" role="3cpWs9">
+            <property role="TrG5h" value="aa" />
+            <node concept="3uibUv" id="3yhgKRJ2a3K" role="1tU5fm">
+              <ref role="3uigEE" node="3yhgKRJ29TR" resolve="Variance.A" />
+            </node>
+            <node concept="10Nm6u" id="3yhgKRJ2aNs" role="33vP2m" />
+          </node>
+        </node>
+        <node concept="3cpWs8" id="3yhgKRJ2lkQ" role="3cqZAp">
+          <node concept="3cpWsn" id="3yhgKRJ2lkR" role="3cpWs9">
+            <property role="TrG5h" value="bb" />
+            <node concept="3uibUv" id="3yhgKRJ2lov" role="1tU5fm">
+              <ref role="3uigEE" node="3yhgKRJ29UJ" resolve="Variance.B" />
+            </node>
+            <node concept="10Nm6u" id="3yhgKRJ2lkT" role="33vP2m" />
+          </node>
+        </node>
+        <node concept="3cpWs8" id="3yhgKRJ2gmt" role="3cqZAp">
+          <node concept="3cpWsn" id="3yhgKRJ2gmu" role="3cpWs9">
+            <property role="TrG5h" value="obj" />
+            <node concept="3uibUv" id="3yhgKRJ2gpn" role="1tU5fm">
+              <ref role="3uigEE" to="wyt6:~Object" resolve="Object" />
+            </node>
+            <node concept="10Nm6u" id="3yhgKRJ2gmw" role="33vP2m" />
+          </node>
+        </node>
+        <node concept="3clFbH" id="3yhgKRJ2go9" role="3cqZAp" />
+        <node concept="3clFbF" id="3yhgKRJ2aIw" role="3cqZAp">
+          <node concept="37vLTI" id="3yhgKRJ2aIy" role="3clFbG">
+            <node concept="2OqwBi" id="3yhgKRJ2afO" role="37vLTx">
+              <node concept="37vLTw" id="3yhgKRJ2a4N" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ29Zj" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2aiM" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2a9H" resolve="get" />
+              </node>
+            </node>
+            <node concept="37vLTw" id="3yhgKRJ2aIA" role="37vLTJ">
+              <ref role="3cqZAo" node="3yhgKRJ2a3J" resolve="aa" />
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="3yhgKRJ2gqS" role="3cqZAp">
+          <node concept="37vLTI" id="3yhgKRJ2gqT" role="3clFbG">
+            <node concept="2OqwBi" id="3yhgKRJ2gqU" role="37vLTx">
+              <node concept="37vLTw" id="3yhgKRJ2gqV" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ29Zj" resolve="param" />
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+              <node concept="37vLTw" id="3yhgKRJ2jMf" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ2cD3" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2jMg" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2anm" resolve="set" />
+                <node concept="37vLTw" id="3yhgKRJ2jWz" role="37wK5m">
+                  <ref role="3cqZAo" node="3yhgKRJ2jp_" resolve="obj" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="3yhgKRJ2pUo" role="3cqZAp">
+          <node concept="2OqwBi" id="3yhgKRJ2q0C" role="3clFbG">
+            <node concept="37vLTw" id="3yhgKRJ2pUm" role="2Oq$k0">
+              <ref role="3cqZAo" node="3yhgKRJ2cD3" resolve="param" />
+            </node>
+            <node concept="liA8E" id="3yhgKRJ2q3x" role="2OqNvi">
+              <ref role="37wK5l" node="3yhgKRJ2anm" resolve="set" />
+              <node concept="2OqwBi" id="3yhgKRJ2qac" role="37wK5m">
+                <node concept="37vLTw" id="3yhgKRJ2q51" role="2Oq$k0">
+                  <ref role="3cqZAo" node="3yhgKRJ2cD3" resolve="param" />
+                </node>
+                <node concept="liA8E" id="3yhgKRJ2qhe" role="2OqNvi">
+                  <ref role="37wK5l" node="3yhgKRJ2a9H" resolve="get" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="16euLQ" id="3yhgKRJ2cYa" role="16eVyc">
+        <property role="TrG5h" value="T" />
+        <node concept="3uibUv" id="3yhgKRJ2d5V" role="3ztrMU">
+          <ref role="3uigEE" node="3yhgKRJ29UJ" resolve="Variance.B" />
+        </node>
+      </node>
+    </node>
+    <node concept="2tJIrI" id="3yhgKRJ2nhT" role="jymVt" />
+    <node concept="3clFb_" id="3yhgKRJ2mY8" role="jymVt">
+      <property role="TrG5h" value="test5" />
+      <node concept="37vLTG" id="3yhgKRJ2mY9" role="3clF46">
+        <property role="TrG5h" value="param" />
+        <node concept="3uibUv" id="3yhgKRJ2mYa" role="1tU5fm">
+          <ref role="3uigEE" node="3yhgKRJ29XW" resolve="Variance.Foo" />
+          <node concept="3qUtgH" id="3yhgKRJ2mYb" role="11_B2D">
+            <node concept="16syzq" id="3yhgKRJ2mYc" role="3qUvdb">
+              <ref role="16sUi3" node="3yhgKRJ2mZl" resolve="T" />
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="3cqZAl" id="3yhgKRJ2mYd" role="3clF45" />
+      <node concept="3Tm1VV" id="3yhgKRJ2mYe" role="1B3o_S" />
+      <node concept="3clFbS" id="3yhgKRJ2mYf" role="3clF47">
+        <node concept="3cpWs8" id="3yhgKRJ2mYg" role="3cqZAp">
+          <node concept="3cpWsn" id="3yhgKRJ2mYh" role="3cpWs9">
+            <property role="TrG5h" value="aa" />
+            <node concept="3uibUv" id="3yhgKRJ2mYi" role="1tU5fm">
+              <ref role="3uigEE" node="3yhgKRJ29TR" resolve="Variance.A" />
+            </node>
+            <node concept="10Nm6u" id="3yhgKRJ2mYj" role="33vP2m" />
+          </node>
+        </node>
+        <node concept="3cpWs8" id="3yhgKRJ2mYk" role="3cqZAp">
+          <node concept="3cpWsn" id="3yhgKRJ2mYl" role="3cpWs9">
+            <property role="TrG5h" value="bb" />
+            <node concept="3uibUv" id="3yhgKRJ2mYm" role="1tU5fm">
+              <ref role="3uigEE" node="3yhgKRJ29UJ" resolve="Variance.B" />
+            </node>
+            <node concept="10Nm6u" id="3yhgKRJ2mYn" role="33vP2m" />
+          </node>
+        </node>
+        <node concept="3cpWs8" id="3yhgKRJ2mYo" role="3cqZAp">
+          <node concept="3cpWsn" id="3yhgKRJ2mYp" role="3cpWs9">
+            <property role="TrG5h" value="cc" />
+            <node concept="3uibUv" id="3yhgKRJ2mYq" role="1tU5fm">
+              <ref role="3uigEE" node="3yhgKRJ2l1E" resolve="Variance.C" />
+            </node>
+            <node concept="10Nm6u" id="3yhgKRJ2mYr" role="33vP2m" />
+          </node>
+        </node>
+        <node concept="3cpWs8" id="3yhgKRJ2mYs" role="3cqZAp">
+          <node concept="3cpWsn" id="3yhgKRJ2mYt" role="3cpWs9">
+            <property role="TrG5h" value="obj" />
+            <node concept="3uibUv" id="3yhgKRJ2mYu" role="1tU5fm">
+              <ref role="3uigEE" to="wyt6:~Object" resolve="Object" />
+            </node>
+            <node concept="10Nm6u" id="3yhgKRJ2mYv" role="33vP2m" />
+          </node>
+        </node>
+        <node concept="3clFbH" id="3yhgKRJ2mYw" role="3cqZAp" />
+        <node concept="1X3_iC" id="3yhgKRJ2mYx" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2mYy" role="8Wnug">
+            <node concept="37vLTI" id="3yhgKRJ2mYz" role="3clFbG">
+              <node concept="2OqwBi" id="3yhgKRJ2mY$" role="37vLTx">
+                <node concept="37vLTw" id="3yhgKRJ2mY_" role="2Oq$k0">
+                  <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+                </node>
+                <node concept="liA8E" id="3yhgKRJ2mYA" role="2OqNvi">
+                  <ref role="37wK5l" node="3yhgKRJ2a9H" resolve="get" />
+                </node>
+              </node>
+              <node concept="37vLTw" id="3yhgKRJ2mYB" role="37vLTJ">
+                <ref role="3cqZAo" node="3yhgKRJ2mYh" resolve="aa" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1X3_iC" id="3yhgKRJgutk" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2mYD" role="8Wnug">
+            <node concept="37vLTI" id="3yhgKRJ2mYE" role="3clFbG">
+              <node concept="2OqwBi" id="3yhgKRJ2mYF" role="37vLTx">
+                <node concept="37vLTw" id="3yhgKRJ2mYG" role="2Oq$k0">
+                  <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+                </node>
+                <node concept="liA8E" id="3yhgKRJ2mYH" role="2OqNvi">
+                  <ref role="37wK5l" node="3yhgKRJ2a9H" resolve="get" />
+                </node>
+              </node>
+              <node concept="37vLTw" id="3yhgKRJ2mYI" role="37vLTJ">
+                <ref role="3cqZAo" node="3yhgKRJ2mYl" resolve="bb" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1X3_iC" id="3yhgKRJ2mYJ" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2mYK" role="8Wnug">
+            <node concept="37vLTI" id="3yhgKRJ2mYL" role="3clFbG">
+              <node concept="2OqwBi" id="3yhgKRJ2mYM" role="37vLTx">
+                <node concept="37vLTw" id="3yhgKRJ2mYN" role="2Oq$k0">
+                  <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+                </node>
+                <node concept="liA8E" id="3yhgKRJ2mYO" role="2OqNvi">
+                  <ref role="37wK5l" node="3yhgKRJ2a9H" resolve="get" />
+                </node>
+              </node>
+              <node concept="37vLTw" id="3yhgKRJ2mYP" role="37vLTJ">
+                <ref role="3cqZAo" node="3yhgKRJ2mYp" resolve="cc" />
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbF" id="3yhgKRJ2mYQ" role="3cqZAp">
+          <node concept="37vLTI" id="3yhgKRJ2mYR" role="3clFbG">
+            <node concept="2OqwBi" id="3yhgKRJ2mYS" role="37vLTx">
+              <node concept="37vLTw" id="3yhgKRJ2mYT" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2mYU" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2a9H" resolve="get" />
+              </node>
+            </node>
+            <node concept="37vLTw" id="3yhgKRJ2mYV" role="37vLTJ">
+              <ref role="3cqZAo" node="3yhgKRJ2mYt" resolve="obj" />
+            </node>
+          </node>
+        </node>
+        <node concept="3clFbH" id="3yhgKRJ2mYW" role="3cqZAp" />
+        <node concept="1X3_iC" id="3yhgKRJ2mYX" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2mYY" role="8Wnug">
+            <node concept="2OqwBi" id="3yhgKRJ2mYZ" role="3clFbG">
+              <node concept="37vLTw" id="3yhgKRJ2mZ0" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2mZ1" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2anm" resolve="set" />
+                <node concept="37vLTw" id="3yhgKRJ2mZ2" role="37wK5m">
+                  <ref role="3cqZAo" node="3yhgKRJ2mYh" resolve="aa" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1X3_iC" id="3yhgKRJ2mZ3" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2mZ4" role="8Wnug">
+            <node concept="2OqwBi" id="3yhgKRJ2mZ5" role="3clFbG">
+              <node concept="37vLTw" id="3yhgKRJ2mZ6" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2mZ7" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2anm" resolve="set" />
+                <node concept="37vLTw" id="3yhgKRJ2mZ8" role="37wK5m">
+                  <ref role="3cqZAo" node="3yhgKRJ2mYl" resolve="bb" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1X3_iC" id="3yhgKRJ2mZ9" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2mZa" role="8Wnug">
+            <node concept="2OqwBi" id="3yhgKRJ2mZb" role="3clFbG">
+              <node concept="37vLTw" id="3yhgKRJ2mZc" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2mZd" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2anm" resolve="set" />
+                <node concept="37vLTw" id="3yhgKRJ2mZe" role="37wK5m">
+                  <ref role="3cqZAo" node="3yhgKRJ2mYp" resolve="cc" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1X3_iC" id="3yhgKRJ2mZf" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2mZg" role="8Wnug">
+            <node concept="2OqwBi" id="3yhgKRJ2mZh" role="3clFbG">
+              <node concept="37vLTw" id="3yhgKRJ2mZi" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2mZj" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2anm" resolve="set" />
+                <node concept="37vLTw" id="3yhgKRJ2mZk" role="37wK5m">
+                  <ref role="3cqZAo" node="3yhgKRJ2mYt" resolve="obj" />
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+        <node concept="1X3_iC" id="3yhgKRJ2pMI" role="lGtFl">
+          <property role="3V$3am" value="statement" />
+          <property role="3V$3ak" value="f3061a53-9226-4cc5-a443-f952ceaf5816/1068580123136/1068581517665" />
+          <node concept="3clFbF" id="3yhgKRJ2pq2" role="8Wnug">
+            <node concept="2OqwBi" id="3yhgKRJ2pu0" role="3clFbG">
+              <node concept="37vLTw" id="3yhgKRJ2pq0" role="2Oq$k0">
+                <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+              </node>
+              <node concept="liA8E" id="3yhgKRJ2pwZ" role="2OqNvi">
+                <ref role="37wK5l" node="3yhgKRJ2anm" resolve="set" />
+                <node concept="2OqwBi" id="3yhgKRJ2pCv" role="37wK5m">
+                  <node concept="37vLTw" id="3yhgKRJ2pyF" role="2Oq$k0">
+                    <ref role="3cqZAo" node="3yhgKRJ2mY9" resolve="param" />
+                  </node>
+                  <node concept="liA8E" id="3yhgKRJ2pHs" role="2OqNvi">
+                    <ref role="37wK5l" node="3yhgKRJ2a9H" resolve="get" />
+                  </node>
+                </node>
+              </node>
+            </node>
+          </node>
+        </node>
+      </node>
+      <node concept="16euLQ" id="3yhgKRJ2mZl" role="16eVyc">
+        <property role="TrG5h" value="T" />
+        <node concept="3uibUv" id="3yhgKRJ2mZm" role="3ztrMU">
+          <ref role="3uigEE" node="3yhgKRJ29UJ" resolve="Variance.B" />
+        </node>
+      </node>
+    </node>
+    <node concept="2tJIrI" id="3yhgKRJ29RJ" role="jymVt" />
+    <node concept="3Tm1VV" id="3yhgKRJ29Qt" role="1B3o_S" />
+  </node>
 </model>