assertEquals(4, binarySearch(0, 5) { index -> 9.compareTo(table[index]) })

    // Search for misses.
    assertEquals(-1, binarySearch(0, 5) { index -> 0.compareTo(table[index]) })
    assertEquals(-2, binarySearch(0, 5) { index -> 2.compareTo(table[index]) })
    assertEquals(-3, binarySearch(0, 5) { index -> 4.compareTo(table[index]) })

    val target = (codePoint and 0x1fff80) shr 7
    val offset =
      binarySearch(
        position = 0,
        limit = sections.length / 4,
      ) { index ->
        val entryIndex = index * 4
        val b0b1 = sections.read14BitInt(entryIndex)
        return@binarySearch target.compareTo(b0b1)
      }

    return when {

      }
    } catch (NullPointerException | ClassCastException e) {
      return false;
    }
  }

  private int unsafeBinarySearch(Object key) throws ClassCastException {
    return Collections.binarySearch(elements, key, unsafeComparator());
  }

  @Override
  boolean isPartialView() {
    return elements.isPartialView();
  }

  @Override
  int copyIntoArray(@Nullable Object[] dst, int offset) {

        for (int key = 0; key <= 10; key++) {
          assertModelAgrees(
              LIST_WITHOUT_DUPS,
              key,
              SortedLists.binarySearch(LIST_WITHOUT_DUPS, key, presentBehavior, absentBehavior),
              presentBehavior,
              absentBehavior);
        }
      }
    }
  }

  public void testWithDups() {

        for (int key = 0; key <= 10; key++) {
          assertModelAgrees(
              LIST_WITHOUT_DUPS,
              key,
              SortedLists.binarySearch(LIST_WITHOUT_DUPS, key, presentBehavior, absentBehavior),
              presentBehavior,
              absentBehavior);
        }
      }
    }
  }

  public void testWithDups() {

  /**
   * 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.