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 static final String XMIID_ATTNAME = "xmiId"; 
	private static final String REFERENCE_ELEMENT_NAME = "reference"; 
	private static final String ORIGINALREFERENCE_ELEMENT_NAME = "originalReference"; 
	private static final String NAMESPACE_ATTNAME = "e4namespace"; 
	/**
	 * The name of the root element that describes the model deltas in XML form (value is
	 * <code>changes</code>).
	 */
	private static final String CHANGES_ELEMENT_NAME = "changes"; 
	/**
	 * The name of the attribute that describes the version of the model deltas (value is
	 * <code>version</code>).
	 */
	private static final String VERSION_ATTNAME = "version"; 
	/**
	 * The version of the model deltas.
	 * 
	 * <ul>