function create_initial_rest_routes() {
	foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {
		$controller = $post_type->get_rest_controller();

		if ( ! $controller ) {
			continue;
		}

		$controller->register_routes();

		if ( post_type_supports( $post_type->name, 'revisions' ) ) {
			$revisions_controller = new WP_REST_Revisions_Controller( $post_type->name );
			$revisions_controller->register_routes();
		}

		if ( 'attachment' !== $post_type->name ) {
			$autosaves_controller = new WP_REST_Autosaves_Controller( $post_type->name );
			$autosaves_controller->register_routes();
		}
	}

	// Post types.
	$controller = new WP_REST_Post_Types_Controller;
	$controller->register_routes();

	// Post statuses.
	$controller = new WP_REST_Post_Statuses_Controller;
	$controller->register_routes();

	// Taxonomies.
	$controller = new WP_REST_Taxonomies_Controller;
	$controller->register_routes();

	// Terms.
	foreach ( get_taxonomies( array( 'show_in_rest' => true ), 'object' ) as $taxonomy ) {
		$class = ! empty( $taxonomy->rest_controller_class ) ? $taxonomy->rest_controller_class : 'WP_REST_Terms_Controller';

		if ( ! class_exists( $class ) ) {
			continue;
		}
		$controller = new $class( $taxonomy->name );
		if ( ! is_subclass_of( $controller, 'WP_REST_Controller' ) ) {
			continue;
		}

		$controller->register_routes();
	}

	// Users.
	$controller = new WP_REST_Users_Controller;
	$controller->register_routes();

	// Comments.
	$controller = new WP_REST_Comments_Controller;
	$controller->register_routes();

	/**
	 * Filters the search handlers to use in the REST search controller.
	 *
	 * @since 5.0.0
	 *
	 * @param array $search_handlers List of search handlers to use in the controller. Each search
	 *                               handler instance must extend the `WP_REST_Search_Handler` class.
	 *                               Default is only a handler for posts.
	 */
	$search_handlers = apply_filters( 'wp_rest_search_handlers', array( new WP_REST_Post_Search_Handler() ) );

	$controller = new WP_REST_Search_Controller( $search_handlers );
	$controller->register_routes();

	// Block Renderer.
	$controller = new WP_REST_Block_Renderer_Controller;
	$controller->register_routes();

	// Settings.
	$controller = new WP_REST_Settings_Controller;
	$controller->register_routes();

	// Themes.
	$controller = new WP_REST_Themes_Controller;
	$controller->register_routes();

}