char low = version.charAt(i + 1);
                    char[] both = {character, low};
                    c = Character.codePointAt(both, 0);
                    i++;
                } catch (IndexOutOfBoundsException ex) {
                    // high surrogate without low surrogate. Not a lot we can do here except treat it as a regular
                    // character
                }
            }

  public boolean isEmpty() {
    return end == start;
  }

  /**
   * Returns the {@code double} value present at the given index.
   *
   * @throws IndexOutOfBoundsException if {@code index} is negative, or greater than or equal to
   *     {@link #length}
   */
  public double get(int index) {
    Preconditions.checkElementIndex(index, length());
    return array[start + index];

  public boolean isEmpty() {
    return end == start;
  }

  /**
   * Returns the {@code int} value present at the given index.
   *
   * @throws IndexOutOfBoundsException if {@code index} is negative, or greater than or equal to
   *     {@link #length}
   */
  public int get(int index) {
    Preconditions.checkElementIndex(index, length());
    return array[start + index];

    assertThat(list.set(0, true)).isFalse();
    assertThat(list.set(0, false)).isTrue();
    assertThrows(NullPointerException.class, () -> list.set(0, null));
    assertThrows(IndexOutOfBoundsException.class, () -> list.set(1, true));
  }

  public void testAsListCanonicalValues() {
    List<Boolean> list = Booleans.asList(true, false);
    assertThat(list.get(0)).isSameInstanceAs(true);

   * | `http://host/?a=apple&b`          | `"a"`                   | `"b"`                   |
   */
  fun queryParameterName(index: Int): String {
    if (queryNamesAndValues == null) throw IndexOutOfBoundsException()
    return queryNamesAndValues[index * 2]!!
  }

  /**
   * Returns the value of the query parameter at `index`. For example this returns `"apple"` for

   *     sequence.length()}
   * @return the index of the first matching character, guaranteed to be no less than {@code start},
   *     or {@code -1} if no character matches
   * @throws IndexOutOfBoundsException if start is negative or greater than {@code
   *     sequence.length()}
   */
  public int indexIn(CharSequence sequence, int start) {
    int length = sequence.length();
    checkPositionIndex(start, length);

   *     sequence.length()}
   * @return the index of the first matching character, guaranteed to be no less than {@code start},
   *     or {@code -1} if no character matches
   * @throws IndexOutOfBoundsException if start is negative or greater than {@code
   *     sequence.length()}
   */
  public int indexIn(CharSequence sequence, int start) {
    int length = sequence.length();
    checkPositionIndex(start, length);