code: function (eventName, args)
    {
      var e = this._events[eventName];
      if (e) {
        args = args || [];
        e.forEach (function (handler)
        {
          handler.apply (this, args);
        });
      }
    }
docs: Calls all registered event handlers for the specified event.
  @param {ContextEvent} eventName
  @param {Array?} args