def _get_user_col_mapping(self) -> Dict[str, str]:
    """Returns a dict mapping default user column names to custom names for a specific model."""
    return {
      c.internalRaterInterceptKey: c.coreWithTopicsRaterInterceptKey,
      c.internalRaterFactor1Key: c.coreWithTopicsRaterFactor1Key,
    }
Returns a dict mapping default user column names to custom names for a specific model.
sourcecode/scoring/mf_core_with_topics_scorer.py