async def METHOD_NAME(self, model_name: str, model_version: Optional[str] = None) -> ModelMetadataResponse:
    """Model metadata handler. It provides information about a model.
    Args:
        model_name (str): Model name.
        model_version (Optional[str]): Model version (optional).
    Returns:
        ModelMetadataResponse: Model metadata object.
    """
    # TODO: support model_version
    if model_version:
        raise NotImplementedError("Model versioning not supported yet.")
    metadata = await self.dataplane.METHOD_NAME(model_name)
    return ModelMetadataResponse.parse_obj(metadata)