@GwtIncompatible // ConcurrentLinkedQueue
  static class QueuingRemovalListener<K, V> extends ConcurrentLinkedQueue<RemovalNotification<K, V>>
      implements RemovalListener<K, V> {

    @Override
    public void onRemoval(RemovalNotification<K, V> notification) {
      add(notification);
    }
  }

  /**
   * {@link RemovalListener} that counts each {@link RemovalNotification} it receives, and provides

  }

  @Override
  public final int hashCode() {
    return typeVariable.hashCode();
  }

  @Override
  public final boolean equals(@CheckForNull Object o) {
    if (o instanceof TypeParameter) {
      TypeParameter<?> that = (TypeParameter<?>) o;
      return typeVariable.equals(that.typeVariable);
    }
    return false;
  }

  @Override
  public String toString() {

///

/// info

Of course, the actual `Content-Type` header, status code, etc, will come from the `Response` object you returned.

///

### Document in OpenAPI and override `Response`

If you want to override the response from inside of the function but at the same time document the "media type" in OpenAPI, you can use the `response_class` parameter AND return a `Response` object.

import jakarta.servlet.http.HttpServletResponse;

public class WebApiFilter implements Filter {

    @Override
    public void init(final FilterConfig filterConfig) throws ServletException {
        // nothing
    }

    @Override
    public void destroy() {
        // nothing
    }

    @Override
    public void doFilter(final ServletRequest request, final ServletResponse response, final FilterChain chain)

  private val failures = mutableListOf<String>()

  override fun select(uri: URI): List<Proxy> {
    requestedUris.add(uri)
    return proxies
  }

  fun assertRequests(vararg expectedUris: URI?) {
    assertThat(requestedUris).containsExactly(*expectedUris)
    requestedUris.clear()
  }

  override fun connectFailed(
    uri: URI,
    sa: SocketAddress,
    ioe: IOException,
  ) {

    int result = value;
    value = newValue;
    return result;
  }

  @Override
  public int hashCode() {
    return value;
  }

  @Override
  public boolean equals(@CheckForNull Object obj) {
    return obj instanceof Count && ((Count) obj).value == value;
  }

  @Override
  public String toString() {
    return Integer.toString(value);
  }

    final List<Object> overriddenInSubclassEvents = Lists.newArrayList();

    @Subscribe
    @Override
    public void overriddenAndAnnotatedInSubclass(Object o) {
      overriddenAndAnnotatedInSubclassEvents.add(o);
    }

    @Override
    public void overriddenInSubclass(Object o) {
      overriddenInSubclassEvents.add(o);
    }
  }

    final List<Object> overriddenInSubclassEvents = Lists.newArrayList();

    @Subscribe
    @Override
    public void overriddenAndAnnotatedInSubclass(Object o) {
      overriddenAndAnnotatedInSubclassEvents.add(o);
    }

    @Override
    public void overriddenInSubclass(Object o) {
      overriddenInSubclassEvents.add(o);
    }
  }

    this.key = key;
    this.value = value;
  }

  @Override
  @ParametricNullness
  public final K getKey() {
    return key;
  }

  @Override
  @ParametricNullness
  public final V getValue() {
    return value;
  }

  @Override
  @ParametricNullness
  public final V setValue(@ParametricNullness V value) {

  }

  @ParametricNullness
  abstract T transform(@ParametricNullness F from);

  @Override
  public final boolean hasNext() {
    return backingIterator.hasNext();
  }

  @Override
  @ParametricNullness
  public final T next() {
    return transform(backingIterator.next());
  }

  @Override
  public final void remove() {
    backingIterator.remove();
  }