new Function<String, String>() {
          @Override
          public String apply(String value) {
            return Ascii.toLowerCase(value);
          }
        };

    static final EntryTransformer<String, String, String> ENTRY_TRANSFORMER =
        new EntryTransformer<String, String, String>() {
          @Override
          public String transformEntry(String key, String value) {
            return Ascii.toLowerCase(value);

            new TestStringMapGenerator() {
              @Override
              protected Map<String, String> create(Entry<String, String>[] entries) {
                Map<String, String> map = populate(new HashMap<String, String>(), entries);
                return Collections.checkedMap(map, String.class, String.class);
              }
            })
        .named("checkedMap/HashMap")
        .withFeatures(

        String message, String a1, String a2, String a3, String a4) {
      super(message);
    }

    public ExceptionWithManyConstructorsButOnlyOneThrowable(
        String message, String a1, String a2, String a3, String a4, String a5) {
      super(message);
    }

    public ExceptionWithManyConstructorsButOnlyOneThrowable(
        String message, String a1, String a2, String a3, String a4, String a5, String a6) {

    String[] array = new String[] {"a"};
    Multiset<String> multiset = ImmutableMultiset.copyOf(array);
    assertEquals(HashMultiset.create(asList("a")), multiset);
  }

  @SuppressWarnings("ArrayAsKeyOfSetOrMap")
  public void testCreation_arrayOfArray() {
    String[] array = new String[] {"a"};
    Multiset<String[]> multiset = ImmutableMultiset.<String[]>of(array);
    Multiset<String[]> expected = HashMultiset.create();

  private static final class ImmutableSetMultimapGenerator extends TestStringSetMultimapGenerator {
    @Override
    protected SetMultimap<String, String> create(Entry<String, String>[] entries) {
      ImmutableSetMultimap.Builder<String, String> builder = ImmutableSetMultimap.builder();
      for (Entry<String, String> entry : entries) {
        builder.put(entry.getKey(), entry.getValue());
      }
      return builder.build();
    }
  }

    String[] array = new String[] {"a"};
    List<String[]> list = ImmutableList.<String[]>of(array);
    assertEquals(singletonList(array), list);
  }

  public void testCopyOf_emptyArray() {
    String[] array = new String[0];
    List<String> list = ImmutableList.copyOf(array);
    assertEquals(emptyList(), list);
  }

  public void testCopyOf_arrayOfOneElement() {
    String[] array = new String[] {"a"};

          <item index="5" class="java.lang.String" itemvalue="io.reactivex.annotations.Nullable" />
          <item index="6" class="java.lang.String" itemvalue="io.reactivex.rxjava3.annotations.Nullable" />
          <item index="7" class="java.lang.String" itemvalue="jakarta.annotation.Nullable" />
          <item index="8" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />

    Entry<String, String>[] array = (Entry<String, String>[]) new Entry<?, ?>[entries.length];
    int i = 0;
    for (Object o : entries) {
      @SuppressWarnings("unchecked")
      Entry<String, String> e = (Entry<String, String>) o;
      array[i++] = e;
    }
    return create(array);
  }

  protected abstract BiMap<String, String> create(Entry<String, String>[] entries);

  @Override

    assertThat(array).isEmpty();
  }

  @GwtIncompatible // Iterables.toArray(Iterable, Class)
  public void testToArraySingleton() {
    Iterable<String> iterable = singletonList("a");
    String[] array = Iterables.toArray(iterable, String.class);
    assertThat(array).isEqualTo(new String[] {"a"});
  }

  @GwtIncompatible // Iterables.toArray(Iterable, Class)
  public void testToArray() {

     * @param val The string to be interpolated.
     * @param callback The function to resolve variable values.
     * @return The interpolated string, or null if the input was null.
     */
    @Nullable
    default String interpolate(@Nullable String val, @Nullable UnaryOperator<String> callback) {
        return interpolate(val, callback, false);
    }

    /**
     * Interpolates a single string value using the provided callback function.