public static void main(String... args) {
    GitHub github =
        RxJavaFeign.builder()
            .decoder(new RxJavaDecoder(new JacksonDecoder()))
            .logger(new ConsoleLogger())
            .logLevel(Logger.Level.FULL)
            .target(GitHub.class, "https://api.github.com");

    System.out.println("Let's fetch and print a list of the contributors to this library.");
    List<Contributor> contributorsFromFlux =
        github.contributors("OpenFeign", "feign").blockingLast();
    for (Contributor contributor : contributorsFromFlux) {
      System.out.println(contributor.login + " (" + contributor.contributions + ")");
    }
  }
adapted from {@code com.example.retrofit.GitHubClient}
reactive/src/test/java/feign/reactive/examples/RxJavaGitHubExample.java