code: def get_help(self, about, help_type='Operation'):
          
          params = {'About': about, 'HelpType': help_type,}
          return self._process_request('Help', params)
docs: Return information about the Mechanical Turk Service
          operations and response group NOTE - this is basically useless
          as it just returns the URL of the documentation
  
          help_type: either 'Operation' or 'ResponseGroup'