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

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

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

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

/**
 * Contains constant definitions for the six standard {@link Charset} instances, which are
 * guaranteed to be supported by all Java platform implementations.
 *
 * <p>Assuming you're free to choose, note that <b>{@link #UTF_8} is widely preferred</b>.
 *

   */
  public static char toUpperCase(char c) {
    return isLowerCase(c) ? (char) (c ^ CASE_MASK) : c;
  }

  /**
   * Indicates whether {@code c} is one of the twenty-six lowercase ASCII alphabetic characters
   * between {@code 'a'} and {@code 'z'} inclusive. All others (including non-ASCII characters)
   * return {@code false}.
   */
  public static boolean isLowerCase(char c) {

    i = map.keySet().iterator();
    i.next();
    i.remove();
    assertNotified(listener, four, five, RemovalCause.EXPLICIT);

    map.put(five, six);
    i = map.values().iterator();
    i.next();
    i.remove();
    assertNotified(listener, five, six, RemovalCause.EXPLICIT);

    assertTrue(listener.isEmpty());
  }

  public void testRemovalListener_replaced() {

    i = map.keySet().iterator();
    i.next();
    i.remove();
    assertNotified(listener, four, five, RemovalCause.EXPLICIT);

    map.put(five, six);
    i = map.values().iterator();
    i.next();
    i.remove();
    assertNotified(listener, five, six, RemovalCause.EXPLICIT);

    assertTrue(listener.isEmpty());
  }

  public void testRemovalListener_replaced() {

   */
  public static char toUpperCase(char c) {
    return isLowerCase(c) ? (char) (c ^ CASE_MASK) : c;
  }

  /**
   * Indicates whether {@code c} is one of the twenty-six lowercase ASCII alphabetic characters
   * between {@code 'a'} and {@code 'z'} inclusive. All others (including non-ASCII characters)
   * return {@code false}.
   */
  public static boolean isLowerCase(char c) {

    --hash=sha256:e1f97cd89c0fe1a0685f8f89d85fa305deb3067d0668151571ba50913e445820
    # via
    #   -r ci/official/requirements_updater/requirements.in
    #   jax
six==1.16.0 \
    --hash=sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926 \
    --hash=sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254
    # via
    #   astunparse

    --hash=sha256:e1f97cd89c0fe1a0685f8f89d85fa305deb3067d0668151571ba50913e445820
    # via
    #   -r ci/official/requirements_updater/requirements.in
    #   jax
six==1.16.0 \
    --hash=sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926 \
    --hash=sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254
    # via
    #   astunparse