code: def update(self, item, dry_run=None):
          
          logger.debug('Updating item. Item: {item} Path: {data_file}'.format(
              item=item,
              data_file=self.data_file
          ))
          self.delete(item, dry_run=dry_run)
          return self.create(item, dry_run=dry_run)
docs: Updates item info in file.