function bp_group_admin_tabs_backcompat( $subnav_output = '', $subnav_item = '', $selected_item = '' ) {
	if ( ! has_action( 'groups_admin_tabs' ) ) {
		return $subnav_output;
	}

	$group = groups_get_current_group();

	ob_start();

	do_action( 'groups_admin_tabs', $selected_item, $group->slug );

	$admin_tabs_backcompat = trim( ob_get_contents() );
	ob_end_clean();

	if ( ! empty( $admin_tabs_backcompat ) ) {
		_doing_it_wrong( "do_action( 'groups_admin_tabs' )", __( 'This action should not be used directly. Please use the BuddyPress Group Extension API to generate Manage tabs.', 'buddypress' ), '2.2.0' );
		$subnav_output .= $admin_tabs_backcompat;
	}

	return $subnav_output;
}