@classmethod
def validate(cls, value: str) ->None:
    """Value validation method.

    Valid values are ``OPEN`` and ``CLOSED``.

    Args:
      value (str): The value to validate.

    Raises:
      ValueError: Raises ValueError if an invalid value has been specified.
    """
    super().validate(value)
    if value not in ['OPEN', 'CLOSED']:
        raise ValueError()
