BP_REST_Forums_Endpoint::get_sub_forums( array $args )

	public function get_sub_forums( $args ) {
		$sub_forums = bbp_forum_get_subforums( $args );

		if ( empty( $sub_forums ) ) {
			return;
		}

		$retval = array();
		foreach ( $sub_forums as $sub_forum ) {
			$retval[] = array(
				'id'    => $sub_forum->ID,
				'slug'  => $sub_forum->post_name,
				'title' => bbp_get_forum_title( $sub_forum->ID ),
				'count' => array(
					'topic' => bbp_get_forum_topic_count( $sub_forum->ID ),
					'reply' => bbp_get_forum_reply_count( $sub_forum->ID ),
				),
				'link'  => bbp_get_forum_permalink( $sub_forum->ID ),
				'group' => (
					(
						function_exists( 'bbp_is_forum_group_forum' )
						&& bbp_is_forum_group_forum( $sub_forum->ID )
						&& function_exists( 'groups_get_group' )
					)
					? (
						bbp_get_forum_group_ids( $sub_forum->ID )
						? groups_get_group( current( bbp_get_forum_group_ids( $sub_forum->ID ) ) )
						: ''
					)
					: ''
				),
			);
		}

		return $retval;
	}