Deserialize and load a model.

        Example:
            end_model = EndModel.load("my_end_model.pkl")
            end_model.score(...)

def load(source, **kwargs):
        """Deserialize and load a model.

        Example:
            end_model = EndModel.load("my_end_model.pkl")
            end_model.score(...)
        """
        with open(source, "rb") as f:
            return torch.load(f, **kwargs)