Get the appropriate value to pass as source_dir to model constructor on deploying

        Returns:
            str: Either a local or an S3 path pointing to the source_dir to be used for code by the model to be deployed

def _model_source_dir(self):
        """Get the appropriate value to pass as source_dir to model constructor on deploying

        Returns:
            str: Either a local or an S3 path pointing to the source_dir to be used for code by the model to be deployed
        """
        return self.source_dir if self.sagemaker_session.local_mode else self.uploaded_code.s3_prefix