code: def server_off(self):
          ''' Stop experiment server '''
          if (self.server.is_server_running() == 'yes' or
                  self.server.is_server_running() == 'maybe'):
              self.server.shutdown()
              print 'Please wait. This could take a few seconds.'
              time.sleep(0.5f server_off(self):
          ''' Stop experiment server '''
          if (self.server.is_server_running() == 'yes' or
                  self.server.is_server_running() == 'maybe'):
              self.server.shutdown()
              print 'Please wait. This could take a few seconds.'
              time.sleep(0.5)
docs: Stop experiment server