code: def gql(request_string):
      if isinstance(request_string, str):
          source = Source(request_string, "GraphQL request")
          return parse(source)
      else:
          raise Exception(
              'Received incompatible request "{}".'.format(
                  request_string
              )
          )
  
label_desc: Use image node_id 1 for calling a global function with example usage: gql(request_string) and returns: parse