def METHOD_NAME(self, idx):
    """Create `HDULocation` for a given row index."""
    row = self[idx]
    return HDULocation(
        hdu_class=row["HDU_CLASS"].strip(),
        base_dir=self.base_dir.as_posix(),
        file_dir=row["FILE_DIR"].strip(),
        file_name=row["FILE_NAME"].strip(),
        hdu_name=row["HDU_NAME"].strip(),
    )