return null;
    }

    public String toString() {
        String ret = proto + ":" + server + "[" + endpoint;
        if (options != null) {
            Iterator iter = options.keySet().iterator();
            while (iter.hasNext()) {
                Object key = iter.next();
                Object val = options.get(key);
                ret += "," + key + "=" + val;
            }
        }
        ret += "]";
        return ret;

     *
     * <p>The default implementation does nothing. Subclasses should override this method
     * if they need to perform cleanup operations.</p>
     *
     * @throws InvokerException if an error occurs while closing the {@link Invoker}
     */
    @Override
    default void close() throws InvokerException {}

     *
     * @return The model building request being processed, never {@code null}.
     */
    ModelBuildingRequest getRequest();

    /**
     * Gets the container used to collect problems that were encountered while processing the event.
     *
     * @return The container used to collect problems that were encountered, never {@code null}.
     */
    ModelProblemCollector getProblems();

import java.util.Iterator;
import java.util.NoSuchElementException;
import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * An iterator that supports a one-element lookahead while iterating.
 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/CollectionHelpersExplained#peekingiterator">{@code
 * PeekingIterator}</a>.
 *
 * @author Mick Killianey

            throw new IllegalStateException(getNoRootMessage());
        }
        return rootDirectory;
    }

    @Nullable
    default Path findRoot(Path basedir) {
        Path rootDirectory = basedir;
        while (rootDirectory != null && !isRootDirectory(rootDirectory)) {
            rootDirectory = rootDirectory.getParent();
        }
        return rootDirectory;
    }

    @Nonnull
    default String getNoRootMessage() {

        assertNotNull(set, "No artifacts");
        assertTrue(set.size() > 0, "No Artifacts");
        Iterator iter = set.iterator();
        assertTrue(set.size() == 4, "Set size should be 4, is " + set.size());

        while (iter.hasNext()) {
            Artifact artifact = (Artifact) iter.next();
            System.out.println("Artifact: " + artifact.getDependencyConflictId() + " " + artifact.getVersion()

        PrintWriter writer = new PrintWriter(buffer);

        writer.print(problems.size());
        writer.print((problems.size() == 1) ? " problem was " : " problems were ");
        writer.print("encountered while building the effective settings");
        writer.println();

        for (SettingsProblem problem : problems) {
            writer.print("[");
            writer.print(problem.getSeverity());

  @CollectionFeature.Require(SUPPORTS_ITERATOR_REMOVE)
  public void testKeySetIteratorRemove() {
    int key0Count = multimap().get(k0()).size();
    Iterator<K> keyItr = multimap().keySet().iterator();
    while (keyItr.hasNext()) {
      if (keyItr.next().equals(k0())) {
        keyItr.remove();
      }
    }
    assertEquals(getNumElements() - key0Count, multimap().size());
    assertGet(k0());
  }

async def websocket_endpoint(
    *,
    websocket: WebSocket,
    item_id: str,
    q: int | None = None,
    cookie_or_token: Annotated[str, Depends(get_cookie_or_token)],
):
    await websocket.accept()
    while True:
        data = await websocket.receive_text()
        await websocket.send_text(
            f"Session cookie or query token value is: {cookie_or_token}"
        )
        if q is not None:

async def websocket_endpoint(
    websocket: WebSocket,
    item_id: str,
    q: int | None = None,
    cookie_or_token: str = Depends(get_cookie_or_token),
):
    await websocket.accept()
    while True:
        data = await websocket.receive_text()
        await websocket.send_text(
            f"Session cookie or query token value is: {cookie_or_token}"
        )
        if q is not None: