Method scheduleEventTask

packages/zone.js/lib/zone-impl.ts:1046–1056

(
      source: string,
      callback: Function,
      data?: TaskData,
      customSchedule?: (task: Task) => void,
      customCancel?: (task: Task) => void,
    )

    }

    scheduleEventTask(
      source: string,
      callback: Function,
      data?: TaskData,
      customSchedule?: (task: Task) => void,
      customCancel?: (task: Task) => void,
    ): EventTask {
      return this.scheduleTask(
        new ZoneTask(eventTask, source, callback, data, customSchedule, customCancel),
      );
    }

    cancelTask(task: Task): any {
      if (task.zone != this)