code: function executeDispatch(event, listener, inst) {
    var type = event.type || 'unknown-event';
    event.currentTarget = getNodeFromInstance(inst);
    invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event);
    event.currentTarget = null;
  }
docs: Dispatch the event to the listener.
  @param {SyntheticEvent} event SyntheticEvent to handle
  @param {function} listener Application-level callback
  @param {*} inst Internal component instance