def _additional_rows_date2int(self, keys, rows):
for row in rows:<EOL><INDENT>for key_start_date, key_end_date in keys:<EOL><INDENT>if key_start_date not in [self._key_start_date, self._key_end_date]:<EOL><INDENT>row[key_start_date] = self._date2int(row[key_start_date])<EOL><DEDENT>if key_end_date not in [self._key_start_date, self._key_end_date]:<EOL><INDENT>row[key_end_date] = self._date2int(row[key_end_date])<EOL><DEDENT><DEDENT><DEDENT>
Replaces start and end dates of the additional date intervals in the row set with their integer representation

:param list[tuple[str,str]] keys: The other keys with start and end date.
:param list[dict[str,T]] rows: The list of rows.

:rtype: list[dict[str,T]]