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
}
			}
			boolean newElement = false;
			for (Entry<EObject, EList<FeatureChange>> entry : objectChanges.entrySet()) {
				EObject key = entry.getKey();
				if (key == reference.eContainer()) {
					for (FeatureChange change : entry.getValue()) {
						if (change.getFeatureName().equals(ELEMENTCONTAINER_CHILDREN_ATTNAME)) {
							EList<?> value = (EList<?>) change.getValue();
							if (value.contains(reference)) {
								return key;
							}
							newElement = true;
							break;
						} else if (change.getFeatureName().equals(PART_TOOLBAR_ATTNAME)) {
							if (reference.equals(change.getValue())) {
								return key;
							}
							newElement = true;
							break;
						}
					}
					break;
				}
			}
			if (!newElement) {
				return reference instanceof MApplication ? changeDescription : reference
						.eContainer();
			}
		}