code: def close(self):
          
          if not self._content_consumed:
              self.raw.close()
  
          release_conn = getattr(self.raw, 'release_conn', None)
          if release_conn is not None:
              release_conn()
docs: Releases the connection back to the pool. Once this method has been
          called the underlying ``raw`` object must not be accessed again.
  
          *Note: Should not normally need to be called explicitly.*