docs: def _get_data(self, file_id):
      
          ''' a helper method for retrieving the byte data of a file '''
          
          title = '%s._get_data' % self.__class__.__name__
          
      # request file data
          try:
              record_data = self.drive.get_media(fileId=file_id).execute()
          except:
              raise DriveConnectionError(title)
          
          return record_data