diff --git a/code/modellisteners/com.mbeddr.mpsutil.modellisteners.runtime/models/com/mbeddr/mpsutil/modellisteners/runtime.mps b/code/modellisteners/com.mbeddr.mpsutil.modellisteners.runtime/models/com/mbeddr/mpsutil/modellisteners/runtime.mps
index c4ecaeaabb..73e4a059d4 100644
--- a/code/modellisteners/com.mbeddr.mpsutil.modellisteners.runtime/models/com/mbeddr/mpsutil/modellisteners/runtime.mps
+++ b/code/modellisteners/com.mbeddr.mpsutil.modellisteners.runtime/models/com/mbeddr/mpsutil/modellisteners/runtime.mps
@@ -22,6 +22,7 @@
     <import index="yg2w" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.util.containers(MPS.Core/)" />
     <import index="g3l6" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.extapi.model(MPS.Core/)" />
     <import index="yyf4" ref="8865b7a8-5271-43d3-884c-6fd1d9cfdd34/java:org.jetbrains.mps.openapi.util(MPS.OpenAPI/)" />
+    <import index="w1kc" ref="6ed54515-acc8-4d1e-a16c-9fd6cfe951ea/java:jetbrains.mps.smodel(MPS.Core/)" />
   </imports>
   <registry>
     <language id="f3061a53-9226-4cc5-a443-f952ceaf5816" name="jetbrains.mps.baseLanguage">
@@ -1572,6 +1573,20 @@
             </node>
           </node>
         </node>
+        <node concept="3clFbF" id="63s_Ska0rPJ" role="3cqZAp">
+          <node concept="2YIFZM" id="63s_Ska0HZp" role="3clFbG">
+            <ref role="37wK5l" to="w1kc:~FastNodeFinderManager.dispose(org.jetbrains.mps.openapi.model.SModel)" resolve="dispose" />
+            <ref role="1Pybhc" to="w1kc:~FastNodeFinderManager" resolve="FastNodeFinderManager" />
+            <node concept="2OqwBi" id="63s_Ska0NLy" role="37wK5m">
+              <node concept="37vLTw" id="63s_Ska0L9W" role="2Oq$k0">
+                <ref role="3cqZAo" node="52ZF9D37MIO" resolve="event" />
+              </node>
+              <node concept="liA8E" id="63s_Ska0R4P" role="2OqNvi">
+                <ref role="37wK5l" to="j9co:~SModelEvent.getModel()" resolve="getModel" />
+              </node>
+            </node>
+          </node>
+        </node>
       </node>
       <node concept="2AHcQZ" id="52ZF9D3cRoQ" role="2AJF6D">
         <ref role="2AI5Lk" to="wyt6:~Override" resolve="Override" />
diff --git a/code/modellisteners/com.mbeddr.mpsutil.modellisteners.sandboxlang/languageModels/listeners.mps b/code/modellisteners/com.mbeddr.mpsutil.modellisteners.sandboxlang/languageModels/listeners.mps
index 4e4996c868..8e5baae90a 100644
--- a/code/modellisteners/com.mbeddr.mpsutil.modellisteners.sandboxlang/languageModels/listeners.mps
+++ b/code/modellisteners/com.mbeddr.mpsutil.modellisteners.sandboxlang/languageModels/listeners.mps
@@ -57,9 +57,16 @@
       </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="1143234257716" name="jetbrains.mps.lang.smodel.structure.Node_GetModelOperation" flags="nn" index="I4A8Y" />
       <concept id="1145404486709" name="jetbrains.mps.lang.smodel.structure.SemanticDowncastExpression" flags="nn" index="2JrnkZ">
         <child id="1145404616321" name="leftExpression" index="2JrQYb" />
       </concept>
+      <concept id="1171323947159" name="jetbrains.mps.lang.smodel.structure.Model_NodesOperation" flags="nn" index="2SmgA7">
+        <child id="1758937410080001570" name="conceptArgument" index="1dBWTz" />
+      </concept>
       <concept id="1144146199828" name="jetbrains.mps.lang.smodel.structure.Node_CopyOperation" flags="nn" index="1$rogu" />
       <concept id="1138056022639" name="jetbrains.mps.lang.smodel.structure.SPropertyAccess" flags="nn" index="3TrcHB">
         <reference id="1138056395725" name="property" index="3TsBF5" />
@@ -77,6 +84,7 @@
       <concept id="5818559022137760597" name="com.mbeddr.mpsutil.modellisteners.structure.Parameter_instance" flags="ng" index="j_vvf" />
       <concept id="5818559022137645654" name="com.mbeddr.mpsutil.modellisteners.structure.BeforeChildRemovedListener" flags="ig" index="j_Nrc" />
       <concept id="5818559022137644042" name="com.mbeddr.mpsutil.modellisteners.structure.ChildAddedListener" flags="ig" index="j_Nyg" />
+      <concept id="5818559022137644848" name="com.mbeddr.mpsutil.modellisteners.structure.ChildRemovedListener" flags="ig" index="j_NIE" />
       <concept id="5818559022137597839" name="com.mbeddr.mpsutil.modellisteners.structure.ConceptModelListeners" flags="ng" index="jA7cl">
         <reference id="1213093996982" name="concept" index="1M2myG" />
         <child id="5818559022137986141" name="listeners" index="j$A37" />
@@ -102,6 +110,7 @@
         <child id="540871147943773366" name="argument" index="25WWJ7" />
       </concept>
       <concept id="1160612413312" name="jetbrains.mps.baseLanguage.collections.structure.AddElementOperation" flags="nn" index="TSZUe" />
+      <concept id="1162935959151" name="jetbrains.mps.baseLanguage.collections.structure.GetSizeOperation" flags="nn" index="34oBXx" />
       <concept id="1165525191778" name="jetbrains.mps.baseLanguage.collections.structure.GetFirstOperation" flags="nn" index="1uHKPH" />
       <concept id="1165595910856" name="jetbrains.mps.baseLanguage.collections.structure.GetLastOperation" flags="nn" index="1yVyf7" />
     </language>
@@ -180,6 +189,31 @@
         </node>
       </node>
     </node>
+    <node concept="j_NIE" id="4zw8TQtKYrG" role="j$A37">
+      <node concept="3clFbS" id="4zw8TQtKYrI" role="2VODD2">
+        <node concept="2xdQw9" id="4zw8TQtKYyJ" role="3cqZAp">
+          <node concept="3cpWs3" id="4zw8TQtKZzE" role="9lYJi">
+            <node concept="2OqwBi" id="4zw8TQtL2F3" role="3uHU7w">
+              <node concept="2OqwBi" id="4zw8TQtL0kH" role="2Oq$k0">
+                <node concept="2OqwBi" id="4zw8TQtKZXb" role="2Oq$k0">
+                  <node concept="j_vvf" id="4zw8TQtKZ$s" role="2Oq$k0" />
+                  <node concept="I4A8Y" id="4zw8TQtL0d5" role="2OqNvi" />
+                </node>
+                <node concept="2SmgA7" id="4zw8TQtL0tl" role="2OqNvi">
+                  <node concept="chp4Y" id="4zw8TQtL0u0" role="1dBWTz">
+                    <ref role="cht4Q" to="64jm:52ZF9D3bond" resolve="ChildConceptA" />
+                  </node>
+                </node>
+              </node>
+              <node concept="34oBXx" id="4zw8TQtL5vz" role="2OqNvi" />
+            </node>
+            <node concept="Xl_RD" id="4zw8TQtKYyL" role="3uHU7B">
+              <property role="Xl_RC" value="Size:" />
+            </node>
+          </node>
+        </node>
+      </node>
+    </node>
     <node concept="3v3Eqs" id="5iW7uqbJrTk" role="j$A37">
       <ref role="j_u2Y" to="64jm:5iW7uqbJsoP" resolve="reference1" />
       <node concept="3clFbS" id="5iW7uqbJrTm" role="2VODD2">