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

 * the methods of the delegate. For example, overriding {@link #put} alone <i>will not</i> change
 * the behavior of {@link #putAll}, which can lead to unexpected behavior. In this case, you should
 * override {@code putAll} as well, either providing your own implementation, or delegating to the
 * provided {@code standardPutAll} method.
 *

  }

  @Test
  public void putAll() {
    Cache<Integer, Integer> cache = CacheBuilder.newBuilder().build();

    cache.putAll(ImmutableMap.of(10, 20, 30, 50, 60, 90));

    assertThat(cache.getIfPresent(10)).isEqualTo(20);
    assertThat(cache.getIfPresent(30)).isEqualTo(50);
    assertThat(cache.getIfPresent(60)).isEqualTo(90);

    cache.asMap().putAll(ImmutableMap.of(10, 50, 30, 20, 60, 70, 5, 5));

        return getCreatedAt();
    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);
        }
        return sourceMap;
    }

    @Override
    protected void addFieldToSource(final Map<String, Object> sourceMap, final String field, final Object value) {

        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() {

        fields.put(key, value);
    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);
        }
        return sourceMap;
    }

    @Override
    protected void addFieldToSource(final Map<String, Object> sourceMap, final String field, final Object value) {

        return systemProperties;
    }

    public MavenExecutionRequest getRequest() {
        return request;
    }

    public void setUserProperties(Properties properties) {
        this.userProperties.putAll(properties);
    }

    public Path getRootDirectory() {
        return rootDirectory;
    }

    public Path getTopDirectory() {
        return topDirectory;
    }

    return super.put(key, value);
  }

  @Override
  public void putAll(Map<? extends Class<? extends @NonNull B>, ? extends B> map) {
    Map<Class<? extends @NonNull B>, B> copy = new LinkedHashMap<>(map);
    for (Entry<? extends Class<? extends @NonNull B>, B> entry : copy.entrySet()) {
      cast(entry.getKey(), entry.getValue());
    }
    super.putAll(copy);
  }

  @CanIgnoreReturnValue
  @Override

        ProcessBuilder processBuilder =
                new ProcessBuilder(path, "-cp", classpath, CIDetectorHelperRunner.class.getName());
        processBuilder.environment().putAll(add);
        ALL.stream()
                .filter(s -> !add.containsKey(s))
                .forEach(k -> processBuilder.environment().remove(k));
        Process process = processBuilder.start();
        process.waitFor();

        @ParametricNullness R columnKey,
        @ParametricNullness V value) {
      return original.put(columnKey, rowKey, value);
    }

    @Override
    public void putAll(Table<? extends C, ? extends R, ? extends V> table) {
      original.putAll(transpose(table));
    }

    @Override
    public @Nullable V remove(@Nullable Object rowKey, @Nullable Object columnKey) {
      return original.remove(columnKey, rowKey);