Bug 338707 Reconciler chokes on elements under parents that have been removed from the model
bundles/org.eclipse.e4.ui.workbench/src/org/eclipse/e4/ui/internal/workbench/XMLModelReconciler.java
private final Object object;
		private final Object after;
		private final Object before;
		Position(Object object, Object after, Object before) {
			this.object = object;
			this.after = after;
			this.before = before;
		}
		public Object getObject() {
			return object;
		}
		public Object getBefore() {
			return before;
		}
		public Object getAfter() {
			return after;
		}
	}
	private ModelDelta createMultiReferenceDelta(Collection<ModelDelta> deltas,