Method attachEvent

codebase/dhtmlxscheduler.es.d.ts:1622–1622

* attaches the handler to an inner event of dhtmlxScheduler * @param name the event's name, case-insensitive * @param handler the handler function * @param settings optional, optional, an object with settings for the event handler

(name: SchedulerEventName, handler: SchedulerCallback, settings?: any)

	 * @param settings optional, optional, an <a href="#propertiesofsettingsobject">object with settings</a> for the event handler
	*/
	attachEvent(name: SchedulerEventName, handler: SchedulerCallback, settings?: any): string;

	/**
	 * makes the scheduler reflect all data changes in the Backbone model and vice versa