public void testToArray_withNull() {
    List<@Nullable Double> list = Arrays.asList((double) 0, (double) 1, null);
    assertThrows(NullPointerException.class, () -> Doubles.toArray(list));
  }

  public void testToArray_withConversion() {
    double[] array = {(double) 0, (double) 1, (double) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);

  }

  public void testToArray_withNull() {
    List<@Nullable Float> list = Arrays.asList((float) 0, (float) 1, null);
    assertThrows(NullPointerException.class, () -> Floats.toArray(list));
  }

  public void testToArray_withConversion() {
    float[] array = {(float) 0, (float) 1, (float) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

    long[] array = {(long) 0, (long) 1};
    List<Long> list = Longs.asList(array);
    list.set(0, (long) 2);
    assertThat(array).isEqualTo(new long[] {(long) 2, (long) 1});
    array[1] = (long) 3;
    assertThat(list).containsExactly((long) 2, (long) 3).inOrder();
  }

  public void testAsList_toArray_roundTrip() {
    long[] array = {(long) 0, (long) 1, (long) 2};
    List<Long> list = Longs.asList(array);

      // don't let the entries get GCed
      List<Entry<Object, Object>> unused = warmUp(cache);
      assertEquals(WARMUP_SIZE, cache.size());
      assertMapSize(cache.asMap(), WARMUP_SIZE);
      checkValidState(cache);
    }
  }

  public void testContainsKey_found() {
    for (LoadingCache<Object, Object> cache : caches()) {
      // don't let the entries get GCed
      List<Entry<Object, Object>> warmed = warmUp(cache);

    private final List<BuilderProblem> problems;

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public SettingsBuilderException(String message, Exception e) {
        super(message, e);
        this.problems = List.of();
    }

    public SettingsBuilderException(String message, List<BuilderProblem> problems) {

    private final List<BuilderProblem> problems;

    /**
     * @param message the message to give
     * @param e the {@link Exception}
     */
    public ToolchainsBuilderException(String message, Exception e) {
        super(message, e);
        this.problems = List.of();
    }

    public ToolchainsBuilderException(String message, List<BuilderProblem> problems) {

  /** Features supported by lists where only removal is allowed. */
  REMOVE_OPERATIONS(CollectionFeature.REMOVE_OPERATIONS, SUPPORTS_REMOVE_WITH_INDEX);

  private final Set<Feature<? super List>> implied;

  ListFeature(Feature<? super List>... implied) {
    this.implied = copyToSet(implied);
  }

  @Override
  public Set<Feature<? super List>> getImpliedFeatures() {
    return implied;
  }

                @SuppressWarnings("unchecked")
                // we dangerously assume E is a string
                List<E> extremeValues = (List<E>) getExtremeValues();
                @SuppressWarnings("unchecked")
                // map generators must past entry objects
                List<E> normalValues = (List<E>) asList(entries);

                // prepare extreme values to be filtered out of view

  E[] createArray(int length);

  /**
   * Returns the iteration ordering of elements, given the order in which they were added to the
   * container. This method may return the original list unchanged, the original list modified in
   * place, or a different list.
   *
   * <p>If the order is non-deterministic, as with {@link java.util.HashSet}, this method can return
   * its input unmodified. Provided that the test suite is built without {@link

    }

    @Override
    public List<Server> getServers() {
        if (servers == null) {
            servers = new ArrayList<>();
        }

        return servers;
    }

    @Override
    public DefaultSettingsDecryptionRequest setServers(List<Server> servers) {
        this.servers = servers;

        return this;
    }

    @Override
    public List<Proxy> getProxies() {