List<List<Integer>> actual = cartesianProduct(list(1, 1), list(2, 3));
    assertThat(actual.lastIndexOf(list(1, 2))).isEqualTo(2);
    assertThat(actual.lastIndexOf(list(1, 3))).isEqualTo(3);
    assertThat(actual.lastIndexOf(list(1, 1))).isEqualTo(-1);

    assertThat(actual.lastIndexOf(list(1))).isEqualTo(-1);
    assertThat(actual.lastIndexOf(list(1, 1, 1))).isEqualTo(-1);
  }

  public void testCartesianProduct_unrelatedTypes() {

                final String className = entryName.substring(startPos, entryName.length() - CLASS_SUFFIX.length()).replace('/', '.');
                final int pos = className.lastIndexOf('.');
                final String packageName = pos == -1 ? null : className.substring(0, pos);
                final String shortClassName = pos == -1 ? className : className.substring(pos + 1);

            }
        }
        return null;
    }

    private static String getDateString(final String text) {
        for (final String dow : DAY_OF_WEEK) {
            final int i = text.lastIndexOf(dow);
            if (i != -1) {
                return text.substring(i);
            }
        }
        return null;
    }

   *     such index exists.
   */
  public static int lastIndexOf(long[] array, long target) {
    return lastIndexOf(array, target, 0, array.length);
  }

  // TODO(kevinb): consider making this public
  private static int lastIndexOf(long[] array, long target, int start, int end) {
    for (int i = end - 1; i >= start; i--) {
      if (array[i] == target) {

   *     such index exists.
   */
  public static int lastIndexOf(long[] array, long target) {
    return lastIndexOf(array, target, 0, array.length);
  }

  // TODO(kevinb): consider making this public
  private static int lastIndexOf(long[] array, long target, int start, int end) {
    for (int i = end - 1; i >= start; i--) {
      if (array[i] == target) {

        return outExt == null ? "txt" : outExt;
    }

    private String getFileName(final String resourceName) {
        final String name = resourceName.replaceAll("/+$", "");
        final int pos = name.lastIndexOf('/');
        if (pos >= 0) {
            return name.substring(pos + 1);
        }
        return name;
    }

    public void setOfficeManager(final OfficeManager officeManager) {

            return parent.remove(index);
        }

        public int indexOf(final Object o) {
            return parent.indexOf(o);
        }

        public int lastIndexOf(final Object o) {
            return parent.lastIndexOf(o);
        }

        public ListIterator<E> listIterator() {
            return parent.listIterator();
        }

    private static boolean pathNamesPossiblyEqual ( String path1, String path2 ) {
        int p1, p2, l1, l2;

        // if unsure return this method returns true

        p1 = path1.lastIndexOf('/');
        p2 = path2.lastIndexOf('/');
        l1 = path1.length() - p1;
        l2 = path2.length() - p2;

        // anything with dots voids comparison
        if ( l1 > 1 && path1.charAt(p1 + 1) == '.' )

     *            パス。{@literal null}であってはいけません
     * @return 拡張子
     */
    public static String getExtension(final String path) {
        assertArgumentNotNull("path", path);

        final int extPos = path.lastIndexOf(".");
        if (extPos >= 0) {
            return path.substring(extPos + 1);
        }
        return null;
    }

    /**
     * パスから拡張子を取り除きます。
     *
     * @param path

    }

    // Check that asterisk did not match across domain name labels.
    val suffixStartIndexInHostname = hostname.length - suffix.length
    if (suffixStartIndexInHostname > 0 &&
      hostname.lastIndexOf('.', suffixStartIndexInHostname - 1) != -1
    ) {
      return false // Asterisk is matching across domain name labels -- not permitted.
    }

    // Hostname matches pattern.
    return true
  }