showStartingHand() {
    return this.whenStatus(GameLayer.STATUS.NEW).then(() => {
      Logger.module('ENGINE').log('GameLayer.showStartingHand');
      // bind players and change status
      this.bindSdkPlayers();
      this.setStatus(GameLayer.STATUS.STARTING_HAND);

      // highlight only my general after highlighting both
      this.whenHighlightedGeneralsAsync().then(() => {
        if (SDK.GameSession.getInstance().isNew()) {
          this._highlightOnlyMyGeneral();
        }
      });

      // show starting hand
      this.bottomDeckLayer.showStartingHand();
    });
  }
Shows the starting hand for my player.
@returns {Promise}