We could avoid the following kind of common builder boilerplate

HttpRequest request = HttpRequest.newBuilder()
   .uri(URI.create("https://foo.com/index.html"))
   .GET()
   .build();

by adding a method to HttpRequest as follows:

    /***
     * Returns a GET HttpRequest to the given URI.
     *
     * @throws URISyntaxException if the string cannot be converted to a URI
    */
    public static HttpRequest GET(String uri) {}