Type org.eclipse.emf.common.util.EList<java.lang.Object> of variable dataValueDelegatingList does not match with type org.eclipse.emf.ecore.resource.impl.ResourceImpl.ContentsEList<org.eclipse.emf.ecore.EObject> of variable contents
Make classes org.eclipse.emf.common.util.EList and org.eclipse.emf.ecore.resource.impl.ResourceImpl.ContentsEList extend a common superclass
Type org.eclipse.emf.common.util.EList<java.lang.Object> of variable dataValueDelegatingList does not match with type org.eclipse.emf.ecore.resource.impl.ResourceImpl.ContentsEList<org.eclipse.emf.ecore.EObject> of variable contents