get_transient_key example

'slug'     => true,
        );
        $query_args       = array_intersect_key( $request->get_params(), $valid_query_args );

        $query_args['locale']             = get_user_locale();
        $query_args['wp-version']         = $wp_version; // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UndefinedVariable -- it's defined in `version.php` above.         $query_args['pattern-categories'] = isset( $request['category'] ) ? $request['category'] : false;
        $query_args['pattern-keywords']   = isset( $request['keyword'] ) ? $request['keyword'] : false;

        $query_args = array_filter( $query_args );

        $transient_key = $this->get_transient_key( $query_args );

        /* * Use network-wide transient to improve performance. The locale is the only site * configuration that affects the response, and it's included in the transient key. */
        $raw_patterns = get_site_transient( $transient_key );

        if ( ! $raw_patterns ) {
            $api_url = 'http://api.wordpress.org/patterns/1.0/?' . build_query( $query_args );
            if ( wp_http_supports( array( 'ssl' ) ) ) {
                $api_url = set_url_scheme( $api_url, 'https' );
            }