private static void add(JavaVersion javaVersion, String source) {
    assertThat(javaVersion.home())
        .as("Java %d home from %s", javaVersion, source)
        .isDirectory();
    KNOWN_VERSIONS.add(javaVersion);
  }
Returns a predicate that tests if its argument is greater than {@code bound}.

@param bound the lower bound
@return a predicate that tests if its argument is greater than {@code bound}
geode-junit/src/main/java/org/apache/geode/test/version/JavaVersions.java