code: def unprotect(self, **kwargs):
          
          id = self.get_id().replace('/', '%2F')
          path = '%s/%s/unprotect' % (self.manager.path, id)
          self.manager.gitlab.http_put(path, **kwargs)
          self._attrs['protected'] = False
docs: Unprotect the branch.
  
          Args:
              **kwargs: Extra options to send to the server (e.g. sudo)
  
          Raises:
              GitlabAuthenticationError: If authentication is not correct
              GitlabProtectError: If the branch could not be unprotected