MetaModel Maintainable

Metamodel was changed.
Signed-off-by: Liana Soima <soima@fortiss.org>
Issue-Ref: 3986

org.fortiss.af3.safetycases/model/safetycases.ecore

@@ -312,7 +312,7 @@
   </eClassifiers>
   <eClassifiers xsi:type="ecore:EClass" name="Maintainable" abstract="true" interface="true">
     <eStructuralFeatures xsi:type="ecore:EReference" name="systemModelChangeImmune"
-        eType="#//ModelChangeEffect"/>
+        eType="#//Change"/>
     <eStructuralFeatures xsi:type="ecore:EReference" name="affectedByCurrentChanges"
         upperBound="-1" eType="#//Change"/>
   </eClassifiers>