code: def find_folder(self, parent_id):
      
  
      body = soap_request.find_folder(parent_id=parent_id, format=u'AllProperties')
      response_xml = self.service.send(body)
      return self._parse_response_for_find_folder(response_xml)
docs: find_folder(parent_id)
        :param str parent_id:  The parent folder to list.
  
        This method will return a list of sub-folders to a given parent folder.
  
        **Examples**::
  
          # Iterate through folders within the default 'calendar' folder.
          folders = service.folder().find_folder(parent_id='calendar')
          for folder in folders:
            print(folder.display_name)
  
          # Delete all folders within the 'calendar' folder.
          folders = service.folder().find_folder(parent_id='calendar')
          for folder in folders:
            folder.delete()