BBP_Admin::suggest_topic()

	public function suggest_topic() {

		$html = '<option value="0">'.esc_html__('-- Select Discussion --','buddyboss').'</option>';

		$posts  = get_posts( array(
			'post_type'          => bbp_get_topic_post_type(),
			'post_status'        => 'publish',
			'post_parent'        => $_POST['post_parent'],
			'numberposts'        => -1,
			'orderby'            => 'title',
			'order'              => 'ASC',
			'walker'             => '',
		) );

		add_filter( 'list_pages', 'bbp_reply_attributes_meta_box_discussion_reply_title', 99, 2 );
		$html .= walk_page_dropdown_tree( $posts, 0);
		remove_filter( 'list_pages', 'bbp_reply_attributes_meta_box_discussion_reply_title', 99, 2  );

		echo $html;
		wp_die();
	}