bp_group_member_demote_link( int $user_id )

function bp_group_member_demote_link( $user_id = 0 ) {
	global $members_template;

	if ( !$user_id ) {
		$user_id = $members_template->member->user_id;
	}

	echo bp_get_group_member_demote_link( $user_id );
}