async def fetchmany(self, size: int = None) -> Iterable[sqlite3.Row]:
        """Fetch up to `cursor.arraysize` number of rows."""
        args = ()  # type: Tuple[int, ...]
        if size is not None:
            args = (size,)
        return await self._execute(self._cursor.fetchmany, *args)
Fetch up to `cursor.arraysize` number of rows.