### Question:
BesuInfo { public static String version() { return String.format("%s/v%s/%s/%s", CLIENT, VERSION, OS, VM); } private  BesuInfo(); static String version(); static String nodeName(final Optional<String> maybeIdentity);  }### Answer:
@Test public void versionStringIsEthstatsFriendly() { assertThat(BesuInfo.version()).matches("[^/]+/v(\\d+\\.\\d+\\.\\d+[^/]*|null)/[^/]+/[^/]+"); }