docs: function emitGameCommandMsg(node, msg) {
          var opts;
          if ('string' !== typeof msg.text) {
              node.err('"in.' + msg.action + '.GAMECOMMAND": msg.text must be ' +
                       'string. Found: ' + msg.text);
              return false;
          }
          if (!parent.constants.gamecommands[msg.text]) {
              node.err('"in.' + msg.action + '.GAMECOMMAND": unknown game  ' +
                       'command received: ' + msg.text);
              return false;
          }
  
          opts = 'string' === typeof msg.data ? J.parse(msg.data) : msg.data;
          return node.emit('NODEGAME_GAMECOMMAND_' + msg.text, opts);
      }