<function>sd_seat_can_multi_session()</function>,
<function>sd_seat_can_tty()</function> and
<function>sd_seat_can_grapical()</function> interfaces
<function>sd_seat_can_multi_session()</function>,
<function>sd_seat_can_tty()</function> and
<function>sd_seat_can_grapical()</function> interfaces