code: def set_content_length_range(self, min_length, max_length):
          
          err_msg = ('Min-length ({}) must be <= Max-length ({}), '
                     'and they must be non-negative.').format(
                         min_length, max_length
                     )
          if min_length > max_length or min_length < 0 or max_length < 0:
              raise ValueError(err_msg)
  
          self._content_length_range = (min_length, max_length)
docs: Set content length range policy condition.
             Raise :exc:`ValueError` for invalid inputs.
  
          :param min_length: Minimum length limit for content size.
          :param max_length: Maximum length limit for content size.