getAnnotationChangeHandler(mPropertyBag) {
			return ChangeHandlerStorage.getAnnotationChangeHandler(mPropertyBag);
		}
Returns the registered change handler for the specified change type or the default change handler.

@param {object} mPropertyBag - Property bag
@param {string} mPropertyBag.changeType - Change type for which the change handler should be returned
@returns {Promise<object>} Resolves with the change handler