*     FIRST_LETTER_MULTIMAP.putAll('b', Arrays.asList('a', 'n', 'a', 'n', 'a'));
   *     FIRST_LETTER_MULTIMAP.putAll('a', Arrays.asList('p', 'p', 'l', 'e'));
   *     FIRST_LETTER_MULTIMAP.putAll('c', Arrays.asList('a', 'r', 'r', 'o', 't'));
   *     FIRST_LETTER_MULTIMAP.putAll('a', Arrays.asList('s', 'p', 'a', 'r', 'a', 'g', 'u', 's'));
   *     FIRST_LETTER_MULTIMAP.putAll('c', Arrays.asList('h', 'e', 'r', 'r', 'y'));
   * }

  @Override
  public @Nullable V put(K key, V value) {
    return delegate.put(checkValid(key), value);
  }

  @Override
  public void putAll(Map<? extends K, ? extends V> map) {
    for (K key : map.keySet()) {
      checkValid(key);
    }
    delegate.putAll(map);
  }

  @Override
  public @Nullable V remove(Object key) {
    return delegate.remove(checkValid(key));
  }

  @Override

     * @throws ClassCastException if any value is not an instance of the type specified by its key
     */
    @CanIgnoreReturnValue
    public <T extends B> Builder<B> putAll(Map<? extends Class<? extends T>, ? extends T> map) {
      for (Entry<? extends Class<? extends T>, ? extends T> entry : map.entrySet()) {
        Class<? extends T> type = entry.getKey();
        T value = entry.getValue();

      super.put(entry);
      return this;
    }

    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> putAll(Map<? extends K, ? extends V> map) {
      return putAll(map.entrySet());
    }

    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> putAll(Iterable<? extends Entry<? extends K, ? extends V>> entries) {
      for (Entry<? extends K, ? extends V> entry : entries) {
        put(entry);

        transformValues(ImmutableMap.of("a", 1), Functions.toStringFunction());
    assertThrows(UnsupportedOperationException.class, () -> map.put("b", "2"));

    assertThrows(UnsupportedOperationException.class, () -> map.putAll(ImmutableMap.of("b", "2")));

    assertThrows(
        UnsupportedOperationException.class,
        () -> map.entrySet().iterator().next().setValue("one"));
  }

  public void testTransformRemoveEntry() {

     * using the <tt>-Djcifs.properties=</tt> commandline parameter.
     */

    public static void setProperties( Properties prp ) {
        Config.prp = new Properties( prp );
        try {
            Config.prp.putAll( System.getProperties() );
        } catch( SecurityException se ) {
            if( log.level > 1 )
                log.println( "SecurityException: jcifs.smb1 will ignore System properties" );
        }
    }

        if (value != null) {
            return value;
        }
        return parent.remove(key);
    }

    @Override
    public void putAll(final Map<? extends K, ? extends V> m) {
        parent.putAll(m);
    }

    @Override
    public void clear() {
        parent.clear();
    }

    @Override
    public Set<K> keySet() {
        // return original keys

    List<V> valuesToPut = asList(v0(), v1(), v0());

    for (K k : sampleKeys()) {
      resetContainer();

      Set<V> expectedValues = copyToSet(multimap().get(k));

      multimap().putAll(k, valuesToPut);
      expectedValues.addAll(valuesToPut);

      assertGet(k, expectedValues);
    }
  }

    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);
        }
        final Map<String, List<String>> searchFieldMap = searchFieldLogList.stream()
                .collect(Collectors.groupingBy(Pair::getFirst, Collectors.mapping(Pair::getSecond, Collectors.toList())));

          .put(UnsupportedOperationException.class, e -> e instanceof UnsupportedOperationException)
          .put(VerifyException.class, e -> e instanceof VerifyException)
          .putAll(PlatformSpecificExceptionBatch.PLATFORM.exceptions())
          .buildOrThrow();

  private ReflectionFreeAssertThrows() {}