code: private static <K extends Enum<K>> K[] getKeyUniverse(Class<K> keyType) {
          // Android-changed: Use JavaLangAccess directly instead of going through
          // SharedSecrets.
          return JavaLangAccess.getEnumConstantsShared(keyType);
      }
docs: Returns all of the values comprising K.
  The result is uncloned, cached, and shared by all callers.