Type org.eclipse.emf.common.util.EList<java.lang.Object> of variable dataValueDelegatingList does not match with type org.eclipse.emf.ecore.resource.URIConverter.WriteableOutputStream.Buffer of variable buffer
Make classes org.eclipse.emf.common.util.EList and org.eclipse.emf.ecore.resource.URIConverter.WriteableOutputStream.Buffer 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.URIConverter.WriteableOutputStream.Buffer of variable buffer