/**
   * Returns true if the [codePoint] was applied successfully. Returns false if it was disallowed.
   */
  fun map(
    codePoint: Int,
    sink: BufferedSink,
  ): Boolean {
    val index =
      mappings.binarySearch {
        when {
          it.sourceCodePoint1 < codePoint -> -1
          it.sourceCodePoint0 > codePoint -> 1
          else -> 0
        }
      }

    // Code points must be in 0..0x10ffff.

      for (int i = 0; i < strictlyOrderedList.size(); i++) {
        assertEquals(i, ordering.binarySearch(strictlyOrderedList, strictlyOrderedList.get(i)));
      }
      List<T> newList = new ArrayList<>(strictlyOrderedList);
      T valueNotInList = newList.remove(1);
      assertEquals(-2, ordering.binarySearch(newList, valueNotInList));
    }

    void testSortedCopy() {

      for (int i = 0; i < strictlyOrderedList.size(); i++) {
        assertEquals(i, ordering.binarySearch(strictlyOrderedList, strictlyOrderedList.get(i)));
      }
      List<T> newList = new ArrayList<>(strictlyOrderedList);
      T valueNotInList = newList.remove(1);
      assertEquals(-2, ordering.binarySearch(newList, valueNotInList));
    }

    void testSortedCopy() {

            Arrays.copyOf(sortedElements, IntMath.saturatedAdd(length, length / 2 + 1));
      }
      int[] sortedCounts = new int[sortedElements.length];
      for (int i = 0; i < length; i++) {
        int index = Arrays.binarySearch(sortedElements, 0, uniques, elements[i], comparator);
        if (counts[i] >= 0) {
          sortedCounts[index] += counts[i];
        } else {
          sortedCounts[index] = ~counts[i];
        }
      }

            }
            // requireNonNull is safe because the first `size` elements have been filled in.
            // We're careful to put only K instances in.
            int index =
                Arrays.binarySearch((K[]) sortedKeys, (K) requireNonNull(keys[i]), comparator);
            sortedValues[index] = requireNonNull(values[i]);
          }
          return new ImmutableSortedMap<K, V>(