code: function () {
      if (this.started) {
        throw new Error('The server was already started');
      }
  
      process.env.NODE_ENV        = 'production';
      process.env.FUNCTIONAL_TEST = true;
  
      this.port           = process.env.WORKER_PORT;
      this.requestedPorts = process.env.REQUESTED_PORTS;
  
      return this._startServer();
    }
docs: ////////////////////////////////////////////////////////////////////////// Public methods ///////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////// 
  MinorTest.start()
  
  Runs once to start the server.