Bug 303831 Warnings logged when trying to merge changes to an MPart's 'closeable' attribute
Warnings are printed out to syserr. --- WARNING: Unknown feature found, reconciliation may fail: Part#closeable
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/workbench/ui/internal/XMLModelReconciler.java
String featureName = featureChange.getFeatureName();
				
				if (shouldPersist(featureName)) {
					if (modelChange == null) {
						
						modelChange = createElement(document, object);
					}
					
					Element deltaElement = createDeltaElement(document, object, featureChange,
							featureName);
					modelChange.appendChild(deltaElement);
				}
			}
		}
		return modelChange;
	}
	private Element createElement(Document document, EObject object) {
		String id = getOriginalId(object);
		Class<?> rootInterface = object.getClass().getInterfaces()[0];
		
		
		Element modelChange = document.createElement(rootInterface.getSimpleName());
		modelChange.setAttribute(APPLICATIONELEMENT_ID_ATTNAME, id);
		return modelChange;
	}
	/**
	 * Retrieves the id of the object by querying for it from the resource.
	 * 
	 * @param object
	 *            the object to retrieve the id for