code: def import_data_to_restful_server(args, content):
      '''call restful server to import data to the experiment'''
      nni_config = Config(get_config_filename(args))
      rest_port = nni_config.get_config('restServerPort')
      running, _ = check_rest_server_quick(rest_port)
      if running:
          response = rest_post(import_data_url(rest_port), content, REST_TIME_OUT)
          if response and check_response(response):
              return response
      else:
          print_error('Restful server is not running...')
      return Nonf import_data_to_restful_server(args, content):
      '''call restful server to import data to the experiment'''
      nni_config = Config(get_config_filename(args))
      rest_port = nni_config.get_config('restServerPort')
      running, _ = check_rest_server_quick(rest_port)
      if running:
          response = rest_post(import_data_url(rest_port), content, REST_TIME_OUT)
          if response and check_response(response):
              return response
      else:
          print_error('Restful server is not running...')
      return None
docs: call restful server to import data to the experiment