getChangeHandlersOfLoadedLibsAndRegisterOnNewLoadedLibs() {
			var oAlreadyLoadedLibraries = Lib.all();
			Lib.attachLibraryChanged(handleLibraryRegistrationAfterFlexLibraryIsLoaded);
			var aPromises = [];

			Object.values(oAlreadyLoadedLibraries).forEach(function(oLibrary) {
				if (oLibrary.extensions && oLibrary.extensions.flChangeHandlers) {
					aPromises.push(registerFlexChangeHandlers(oLibrary.extensions.flChangeHandlers));
				}
			});

			return Promise.all(aPromises);
		}
Detects already loaded libraries and registers defined changeHandlers.


@alias sap.ui.fl.registry.ChangeHandlerRegistration

@author SAP SE
@version ${version}
@private
@ui5-restricted sap.ui.fl

@returns {Promise} Returns an empty promise when all changeHandlers from all libraries are registered.