def METHOD_NAME(self, multipath_id):
    """
    Return True if multipath device is owned by a managed volume.
    """
    sql = """
        SELECT EXISTS (
            SELECT 1
            FROM volumes
            WHERE multipath_id = ?
        )
    """
    res = self._conn.execute(sql, (multipath_id,))
    row = res.fetchall()[0]
    return row[0] == 1