code: def project_list_folder(object_id, input_params={}, always_retry=True, **kwargs):
      
      return DXHTTPRequest('/%s/listFolder' % object_id, input_params, always_retry=always_retry, **kwargs)
docs: Invokes the /project-xxxx/listFolder API method.
  
      For more info, see: https://wiki.dnanexus.com/API-Specification-v1.0.0/Folders-and-Deletion#API-method%3A-%2Fclass-xxxx%2FlistFolder