def _first_as_df(self):
        """Gets the first row as a Panda's DataFrame. Useful for functions like
        dtypes & ftypes"""
        columns = self._schema_rdd.columns
        df = pd.DataFrame.from_records(
            [self._schema_rdd.first()],
            columns=self._schema_rdd.columns)
        df = _update_index_on_df(df, self._index_names)
        return df
Gets the first row as a Panda's DataFrame. Useful for functions like
        dtypes & ftypes