DefaultSettingsDecryptionResult(List<Server> servers, List<Proxy> proxies, List<SettingsProblem> problems) {
        this.servers = (servers != null) ? servers : new ArrayList<>();
        this.proxies = (proxies != null) ? proxies : new ArrayList<>();
        this.problems = (problems != null) ? problems : new ArrayList<>();
    }

    @Override
    public Server getServer() {
        return servers.isEmpty() ? null : servers.get(0);
    }

        Map<String, Object> targetMap = new HashMap<>();
        targetMap.put("existing", "value");
        String configParam = "new.param=value\nconfig.setting=true";
        ParameterUtil.loadConfigParams(targetMap, configParam);
        assertEquals(3, targetMap.size());
        assertEquals("value", targetMap.get("existing"));
        assertEquals("value", targetMap.get("new.param"));

        final BytesStreamOutput tmp = new BytesStreamOutput();
        final long bytes = new ByteSizeValue(dataMb, ByteSizeUnit.MB).getBytes();
        for (int i = 0; i < bytes / 8; i++) {
            tmp.writeLong(i);
        }
        bytesArray = tmp.copyBytes();
        if (bytesArray instanceof BytesArray == false) {
            throw new AssertionError("expected BytesArray but saw [" + bytesArray.getClass() + "]");

        final BytesStreamOutput tmp = new BytesStreamOutput();
        final long bytes = new ByteSizeValue(dataMb, ByteSizeUnit.MB).getBytes();
        for (int i = 0; i < bytes / 8; i++) {
            tmp.writeLong(i);
        }
        pagedBytes = tmp.bytes();
        if (pagedBytes instanceof PagedBytesReference == false) {

  private final Equivalence<? super T> equivalence;
  private final RelationshipTester<T> delegate;
  private final List<T> items = new ArrayList<>();

  private EquivalenceTester(Equivalence<? super T> equivalence) {
    this.equivalence = checkNotNull(equivalence);
    this.delegate =
        new RelationshipTester<>(
            equivalence, "equivalent", "hash", /* itemReporter= */ Item::toString);
  }

  private final Equivalence<? super T> equivalence;
  private final RelationshipTester<T> delegate;
  private final List<T> items = new ArrayList<>();

  private EquivalenceTester(Equivalence<? super T> equivalence) {
    this.equivalence = checkNotNull(equivalence);
    this.delegate =
        new RelationshipTester<>(
            equivalence, "equivalent", "hash", /* itemReporter= */ Item::toString);
  }

      }
      ArrayList<Integer> nodeList = new ArrayList<>(network.nodes());
      for (int i = 0; i < NUM_EDGES; ++i) {
        // Parallel edges are allowed, so this should always succeed.
        assertThat(
                network.addEdge(
                    getRandomElement(nodeList, gen), getRandomElement(nodeList, gen), new Object()))
            .isTrue();
      }

      // thus double memory usage.
      this.data =
          new AtomicLongArray(Ints.checkedCast(LongMath.divide(bits, 64, RoundingMode.CEILING)));
      this.bitCount = LongAddables.create();
    }

    // Used by serialization
    LockFreeBitArray(long[] data) {
      checkArgument(data.length > 0, "data length is zero!");
      this.data = new AtomicLongArray(data);
      this.bitCount = LongAddables.create();

    return IntegerDomain.INSTANCE;
  }

  private static final class IntegerDomain extends DiscreteDomain<Integer> implements Serializable {
    private static final IntegerDomain INSTANCE = new IntegerDomain();

    IntegerDomain() {
      super(true);
    }

    @Override
    public @Nullable Integer next(Integer value) {
      int i = value;
      return (i == Integer.MAX_VALUE) ? null : i + 1;

    static final Ordering<@Nullable Object> ARBITRARY_ORDERING = new ArbitraryOrdering();
  }

  @J2ktIncompatible // MapMaker
  @VisibleForTesting
  static class ArbitraryOrdering extends Ordering<@Nullable Object> {

    private final AtomicInteger counter = new AtomicInteger(0);
    private final ConcurrentMap<Object, Integer> uids =
        Platform.tryWeakKeys(new MapMaker()).makeMap();