code: def _get_ip_unnumbered(self, unnumbered_type, unnumbered_name):
          
          unnumbered_type = self._callback(unnumbered_type, handler='get_config')
          unnumbered_name = self._callback(unnumbered_name, handler='get_config')
          unnumbered_type = pynos.utilities.return_xml(str(unnumbered_type))
          unnumbered_name = pynos.utilities.return_xml(str(unnumbered_name))
          return pynos.utilities.merge_xml(unnumbered_type, unnumbered_name)
docs: Get and merge the `ip unnumbered` config from an interface.
  
          You should not use this method.
          You probably want `Interface.ip_unnumbered`.
  
          Args:
              unnumbered_type: XML document with the XML to get the donor type.
              unnumbered_name: XML document with the XML to get the donor name.
  
          Returns:
              Merged XML document.
  
          Raises:
              None