SYNOPSIS
        string get_bb_uid(void)

DESCRIPTION
        This method is called when efun process_string() is used without a
        current object (e.g. from notify_fail method). The current object
        will be set to the current command giver, and will receive the euid
        returned from this function.

        If strict-euids, this function must exist and return a string.
        Otherwise the function is optional and/or may return 0.

HISTORY
        Since 3.2.1, get_bb_uid() is needed just for process_string()
        if no this_object() is present.

SEE ALSO
        uids(C), creator_file(M), creator(E), get_master_uid(M)