ObjectReference

@model_validator(mode="after")
def check_type(self) -> "ObjectReference":
    if self.type == "" or self.name == "":
        raise ValueError("type and name must be set")
    return self

@classmethod
def create(cls, uuid: UUID) -> "ObjectReference":
    """Factory method to create a new instance of the class.

    This method is used to create a new instance of the class with the given UUID. It
    is exactly the same as calling `ObjectReference(uuid=uuid)`, but without type
    checking failing because of the missing `type` and `name` arguments.

    Args:
        uuid (UUID): The unique identifier of the object

    Returns:
        ObjectReference: The new instance of the class
    """
    return cls(uuid=uuid)  # type: ignore[call-arg]

@classmethod
def get_data_model(cls) -> "Type[Model]":
    """Get the data class for the reference.

    This method returns the data class that is associated with the reference class.

    Returns:
        Type[BM]: The data class for the reference

    Raises:
        ValueError: If the data class is not set

    """
    if cls._data_class is None:
        raise RuntimeError("data class not set")

    return cls._data_class