@Test
public void getInputstream() throws IOException {

  ModuleHelper.walkModule(
      p -> {
        ModuleHelper.pathToClassName(p)
            .ifPresent(
                className -> {
                  ModuleHelper.pathToModule(p)
                      .ifPresent(
                          mod -> {
                            try (InputStream in = ModuleHelper.getInputStream(p.toString())) {
                              in.available();
                              log.info(mod + ":" + className);
                            } catch (IOException e) {
                              log.catching(e);
                            }
                          });
                });
      });
}