"four", 4,
            "five", 5,
            "six", 6,
            "seven", 7),
        "one",
        1,
        "two",
        2,
        "three",
        3,
        "four",
        4,
        "five",
        5,
        "six",
        6,
        "seven",
        7);
    assertMapEquals(
        ImmutableBiMap.of(
            "one", 1,

            "one", 1,
            "two", 2,
            "three", 3,
            "four", 4,
            "five", 5,
            "six", 6,
            "seven", 7),
        "five",
        5,
        "four",
        4,
        "one",
        1,
        "seven",
        7,
        "six",
        6,
        "three",
        3,
        "two",
        2);
    assertMapEquals(

            "four", 4,
            "five", 5,
            "six", 6,
            "seven", 7),
        "one",
        1,
        "two",
        2,
        "three",
        3,
        "four",
        4,
        "five",
        5,
        "six",
        6,
        "seven",
        7);
    assertMapEquals(
        ImmutableMap.of(
            "one", 1,

  // For example: (long) data[i++] | (long) data[i++] << 8 | ...
  // If data[i] == (byte) 0x80, the first cast will sign-extend it to 0xffffffffffffff80,
  // masking the remaining seven bytes.
  // To test this, we give an input where bit 7 is not cleared. For example:
  // (1) 00 01 02 03 04 05 06 07 80
  // (2) 00 01 02 03 04 05 06 07 81
  // (3) 00 01 02 03 04 05 06 07 ff (or anything in between)

 * href="https://github.com/google/guava/wiki/StringsExplained#charsets">{@code Charsets}</a>.
 *
 * @author Mike Bostock
 * @since 1.0
 */
@GwtCompatible
public final class Charsets {

  /**
   * US-ASCII: seven-bit ASCII, the Basic Latin block of the Unicode character set (ISO646-US).
   *
   * @deprecated Use {@link StandardCharsets#US_ASCII} instead.
   */
  @Deprecated @J2ktIncompatible @GwtIncompatible // Charset not supported by GWT

    return ImmutableList.copyOf(SORTED_NUMBER_NAMES.subList(i, j));
  }

  private static final ImmutableList<String> NUMBER_NAMES =
      ImmutableList.of("one", "two", "three", "four", "five", "six", "seven");

  private static final ImmutableList<String> SORTED_NUMBER_NAMES =
      Ordering.<String>natural().immutableSortedCopy(NUMBER_NAMES);

// https://www.iana.org/domains/root/db/sener.html
sener

// services : Binky Moon, LLC
// https://www.iana.org/domains/root/db/services.html
services

// seven : Seven West Media Ltd
// https://www.iana.org/domains/root/db/seven.html
seven

// sew : SEW-EURODRIVE GmbH & Co KG
// https://www.iana.org/domains/root/db/sew.html
sew

// sex : ICM Registry SX LLC

service.gov.scot
service.gov.uk
service.one
servicebus.windows.net
services
services.aero
setagaya.tokyo.jp
seto.aichi.jp
setouchi.okayama.jp
settsu.osaka.jp
sevastopol.ua
seven
sew
sex
sex.hu
sex.pl
sexy
sf.no
sfr
sg
sg-1.paas.massivegrid.net
sh
sh.cn
shacknet.nu
shakotan.hokkaido.jp
shangrila
shari.hokkaido.jp
sharp

service.gov.scot
service.gov.uk
service.one
servicebus.windows.net
services
services.aero
setagaya.tokyo.jp
seto.aichi.jp
setouchi.okayama.jp
settsu.osaka.jp
sevastopol.ua
seven
sew
sex
sex.hu
sex.pl
sexy
sf.no
sfr
sg
sg-1.paas.massivegrid.net
sh
sh.cn
shacknet.nu
shakotan.hokkaido.jp
shangrila
shari.hokkaido.jp
sharp

  /** Adds the chain to the seen set, and returns whether all the chain was new to us. */
  private static boolean addCausalChain(Set<Throwable> seen, Throwable param) {
    // Declare a "true" local variable so that the Checker Framework will infer nullness.
    Throwable t = param;

    for (; t != null; t = t.getCause()) {
      boolean firstTimeSeen = seen.add(t);
      if (!firstTimeSeen) {
        /*