docs: def get_merge_rules(schema=None):
      """
      Returns merge rules as key-value pairs, in which the key is a JSON path as a tuple, and the value is a list of
      merge properties whose values are `true`.
      """
      schema = schema or get_release_schema_url(get_tags()[-1])
      if isinstance(schema, dict):
          deref_schema = jsonref.JsonRef.replace_refs(schema)
      else:
          deref_schema = _get_merge_rules_from_url_or_path(schema)
      return dict(_get_merge_rules(deref_schema['properties']))