def get_or_create_model(self) -> Transformer:
        """
        Returns a transformer (only valid if a StandardModelContext was specified in the config).
        """
        model_context = self.get_model_context()
        assert isinstance(model_context, StandardModelContext)
        return model_context.get_or_create_model()

        Returns a transformer (only valid if a StandardModelContext was specified in the config).
        
neuron_explainer/activations/derived_scalars/config.py