code: def _transform_meta_key_value(self, minidom_meta_element):
          
          xt = minidom_meta_element.getAttribute('xsi:type')
          if _LITERAL_META_PAT.match(xt):
              return self._literal_transform_meta_key_value(minidom_meta_element)
          elif _RESOURCE_META_PAT.match(xt):
              return self._resource_transform_meta_key_value(minidom_meta_element)
          else:
              _LOG.debug('xsi:type attribute "%s" not LiteralMeta or ResourceMeta', xt)
              return None, None
docs: Checks if the minidom_meta_element can be represented as a
              key/value pair in a object.
  
          Returns (key, value) ready for JSON serialization, OR
                  `None, None` if the element can not be treated as simple pair.
          If `None` is returned, then more literal translation of the
              object may be required.