function fireEnterSpaceXF1AltY(target, extraProperties) {
  if (!extraProperties) {
    extraProperties = {};
  }

  fire(KeyCodes.ENTER, extraProperties, target);
  fire(KeyCodes.SPACE, extraProperties, target);
  fire(KeyCodes.X, extraProperties, target);
  fire(KeyCodes.F1, extraProperties, target);
  fire(KeyCodes.Y, Object.assign({}, {altKey: true}, extraProperties), target);
}
Fires enter, space, X, F1, and Alt-Y keys on a widget.
@param {Element} target The element on which to fire the events.
@param {Object?=} extraProperties Event properties to be mixed into the
    BrowserEvent.