docs: def _CurrentAuditLog():
    """Get the rdfurn of the current audit log."""
    now_sec = rdfvalue.RDFDatetime.Now().AsSecondsSinceEpoch()
    rollover_seconds = AUDIT_ROLLOVER_TIME.seconds
    # This gives us a filename that only changes every
    # AUDIT_ROLLOVER_TIfilME seconds, but is still a valid timestamp.
    current_log = (now_sec // rollover_seconds) * rollover_seconds
    return _AuditLogBase().Add(str(current_log))