Angular js output event emitter method not getting called

Question

The method triggered through output event emitter is not getting called. This is my output event emitter:

 @Output() onEditTask: EventEmitter<Task> = new EventEmitter();

This is my view:

<app-add-task (onAddTask)="addTask($event)" (onEditTask)="editTask($event)"></app-add-task>

This method doesnt get called:

  editTask(task: Task) {
    debugger;
  }