rangeMap.put(Range.open(3, 7), 1);
    rangeMap.put(Range.closed(9, 10), 2);
    rangeMap.put(Range.closed(12, 16), 3);

    RangeMap<Integer, Integer> copy = TreeRangeMap.copyOf(rangeMap);

    assertEquals(rangeMap.asMapOfRanges(), copy.asMapOfRanges());
  }

  public void testCopyOfImmutableRangeMap() {
    ImmutableRangeMap<Integer, Integer> rangeMap =
        ImmutableRangeMap.<Integer, Integer>builder()

          SerializableTester.reserializeAndAssert(asMap);
          SerializableTester.reserializeAndAssert(descendingMap);
          assertEquals(
              ImmutableList.copyOf(asMap.entrySet()).reverse(),
              ImmutableList.copyOf(descendingMap.entrySet()));

          for (Range<Integer> query : RANGES) {
            assertEquals(expectedAsMap.get(query), asMap.get(query));
          }
        }
      }

   * ObjectArrays, which is the main caller of this method.)
   */
  static <T extends @Nullable Object> T[] newArray(T[] reference, int length) {
    T[] empty = reference.length == 0 ? reference : Arrays.copyOf(reference, 0);
    return Arrays.copyOf(empty, length);
  }

  /** Equivalent to Arrays.copyOfRange(source, from, to, arrayOfType.getClass()). */
  /*

        assertThrows(IllegalArgumentException.class, () -> ImmutableRangeSet.copyOf(subset));
      } else {
        RangeSet<Integer> copy = ImmutableRangeSet.copyOf(subset);
        assertEquals(mutable, copy);
      }

      ImmutableRangeSet<Integer> built = builder.build();
      assertEquals(mutable, built);
      assertEquals(ImmutableRangeSet.copyOf(mutable), built);
      assertEquals(mutable.complement(), built.complement());

      ImmutableBiMap<K, V> bimap = (ImmutableBiMap<K, V>) map;
      // TODO(lowasser): if we need to make a copy of a BiMap because the
      // forward map is a view, don't make a copy of the non-view delegate map
      if (!bimap.isPartialView()) {
        return bimap;
      }
    }
    return copyOf(map.entrySet());
  }

  /**

   *
   * @throws NullPointerException if any key, value, or entry is null
   * @since 19.0
   */
  public static <K, V> ImmutableMultimap<K, V> copyOf(
      Iterable<? extends Entry<? extends K, ? extends V>> entries) {
    return ImmutableListMultimap.copyOf(entries);
  }

  final transient ImmutableMap<K, ? extends ImmutableCollection<V>> map;
  final transient int size;

   * the current capacity.
   */
  void resizeEntries(int newCapacity) {
    this.keys = Arrays.copyOf(keys, newCapacity);
    this.values = Arrays.copyOf(values, newCapacity);
    long[] entries = this.entries;
    int oldCapacity = entries.length;
    entries = Arrays.copyOf(entries, newCapacity);
    if (newCapacity > oldCapacity) {
      Arrays.fill(entries, oldCapacity, newCapacity, UNSET);
    }

    checkNotNull(keyFunction);
    checkNotNull(valueFunction);
    checkNotNull(mergeFunction);
    return collectingAndThen(
        toMap(keyFunction, valueFunction, mergeFunction, LinkedHashMap::new), ImmutableMap::copyOf);
  }

  static <T extends @Nullable Object, K, V>
      Collector<T, ?, ImmutableSortedMap<K, V>> toImmutableSortedMap(
          Comparator<? super K> comparator,

            headers.entrySet().stream().filter(e -> e.getKey() != null).forEach(
                    e -> map.put(e.getKey().toLowerCase(Locale.ROOT), e.getValue() == null ? List.of() : List.copyOf(e.getValue())));
            this.headers = Map.copyOf(map);
        }
    }

    /**
     * Gets the headers of the response.
     *
     * @return the headers.
     */
    public Map<String, List<String>> getHeaders() {

      TypeToken<?> type,
      Annotation[] annotations,
      @Nullable Object annotatedType) {
    this.declaration = declaration;
    this.position = position;
    this.type = type;
    this.annotations = ImmutableList.copyOf(annotations);
    this.annotatedType = annotatedType;
  }

  /** Returns the type of the parameter. */
  public TypeToken<?> getType() {
    return type;
  }