Function _delay

codebase/sources/dhtmlxscheduler.es.js:14133–14142

(method, object, params, delay2)

      }
    };
    let _delay = function(method, object, params, delay2) {
      setTimeout(function() {
        if (scheduler2.$destroyed) {
          return true;
        }
        let ret = method.apply(object, params);
        method = object = params = null;
        return ret;
      }, delay2 || 1);
    };
    scheduler2._event_resolve_delay = 1500;
    scheduler2.attachEvent("onEventLoading", function(event2) {
      if (event2.lat && event2.lng) {