function onParentDestroy(oEvent) {
		var sParentId = oEvent.object.getId();
		mExtensionPointsByParent[sParentId].forEach(function(oExtensionPoint) {
			mExtensionPointsByViewId[oExtensionPoint.view.getId()][oExtensionPoint.name].bParentIsDestroyed = true;
		});
	}
Object to register extension points to track their locations.
@constructor
@alias sap.ui.fl.apply._internal.extensionPoint.Registry

@author SAP SE
@version ${version}

@private
@ui5-restricted sap.ui.fl