def __init__(self, name, filename=None):
        self.name = name
        super(NamedRequirements, self).__init__(filename=filename)
def __init__(self, schema_file: str):
        self._schema = artifact_utils.read_schema_file(schema_file)

        self._type_name, self._metric_fields = artifact_utils.parse_schema(
            self._schema)

        self._values = {}