def _add_def_paths(self, prop_dict):
for prop_key, prop_value in prop_dict.iteritems():<EOL><INDENT>if prop_key == '<STR_LIT>' and not '<STR_LIT>'.startswith('<STR_LIT:#>'):<EOL><INDENT>prop_dict[prop_key] = '<STR_LIT>' + prop_dict[prop_key]<EOL><DEDENT>elif isinstance(prop_value, dict):<EOL><INDENT>self._add_def_paths(prop_value)<EOL><DEDENT><DEDENT>
Recursive method to add relative paths for any $ref objects.

        Args:
          prop_dict: The property dict to alter.

        Side Effects:
          Alters prop_dict in-place.