WP_REST_Templates_Controller::get_template_fallback( WP_REST_Request $request ): WP_REST_Response|WP_Error

160	public function get_template_fallback( $request ) {161		$hierarchy = get_template_hierarchy( $request['slug'], $request['is_custom'], $request['template_prefix'] );162 163		do {164			$fallback_template = resolve_block_template( $request['slug'], $hierarchy, '' );165			array_shift( $hierarchy );166		} while ( ! empty( $hierarchy ) && empty( $fallback_template->content ) );167 168		// To maintain original behavior, return an empty object rather than a 404 error when no template is found.169		$response = $fallback_template ? $this->prepare_item_for_response( $fallback_template, $request ) : new stdClass();170 171		return rest_ensure_response( $response );172	}