BP_Groups_Theme_Compat::directory_template_hierarchy( string $templates )

	public function directory_template_hierarchy( $templates ) {
		// Set up the template hierarchy.
		$new_templates = array();
		if ( '' !== bp_get_current_group_directory_type() ) {
			$new_templates[] = 'groups/index-directory-type-' . sanitize_file_name( bp_get_current_group_directory_type() ) . '.php';
		}
		$new_templates[] = 'groups/index-directory.php';

		/**
		 * Filters the Groups directory page template hierarchy based on priority.
		 *
		 * @since BuddyPress 1.8.0
		 *
		 * @param array $value Array of default template files to use.
		 */
		$new_templates = apply_filters( 'bp_template_hierarchy_groups_directory', $new_templates );

		// Merge new templates with existing stack.
		// @see bp_get_theme_compat_templates().
		$templates = array_merge( (array) $new_templates, $templates );

		return $templates;
	}