* @param requirements Key-value pairs specifying toolchain requirements (e.g., "version": "11")
     * @return List of matching toolchains, never null
     * @throws ToolchainManagerException if toolchain retrieval fails
     */
    @Nonnull
    List<Toolchain> getToolchains(@Nonnull Session session, String type, Map<String, String> requirements);

    /**

class Item(BaseModel):
    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None
    tags: list[str] = []


@app.post("/items/")
async def create_item(item: Item) -> Item:
    return item


@app.get("/items/")
async def read_items() -> list[Item]:
    return [
        Item(name="Portal Gun", price=42.0),
        Item(name="Plumbus", price=32.0),

    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()
    images: list[Image] | None = None


class Offer(BaseModel):
    name: str
    description: str | None = None
    price: float
    items: list[Item]


@app.post("/offers/")
async def create_offer(offer: Offer):

    val dispatcher: Dispatcher = client.dispatcher()
    val proxy: Proxy? = client.proxy()
    val protocols: List<Protocol> = client.protocols()
    val connectionSpecs: List<ConnectionSpec> = client.connectionSpecs()
    val interceptors: List<Interceptor> = client.interceptors()
    val networkInterceptors: List<Interceptor> = client.networkInterceptors()
    val eventListenerFactory: EventListener.Factory = client.eventListenerFactory()

    /**
     * Removes a path segment. When this method returns the last segment is always "", which means
     * the encoded path will have a trailing '/'.
     *
     * Popping "/a/b/c/" yields "/a/b/". In this case the list of path segments goes from ["a",
     * "b", "c", ""] to ["a", "b", ""].
     *
     * Popping "/a/b/c" also yields "/a/b/". The list of path segments goes from ["a", "b", "c"]
     * to ["a", "b", ""].

      // k is really large; just do a straightforward sorted-copy-and-sublist
      ArrayList<E> list = Lists.newArrayList(iterator);
      sort(list, this);
      if (list.size() > k) {
        list.subList(k, list.size()).clear();
      }
      list.trimToSize();
      return unmodifiableList(list);
    } else {
      TopKSelector<E> selector = TopKSelector.least(k, this);
      selector.offerAll(iterator);

            return new CumulativeScopeArtifactFilter(scopes);
        }
    }

    public List<MavenProject> executeForkedExecutions(MojoExecution mojoExecution, MavenSession session)
            throws LifecycleExecutionException {
        List<MavenProject> forkedProjects = Collections.emptyList();

        Map<String, List<MojoExecution>> forkedExecutions = mojoExecution.getForkedExecutions();

    public StopwordsService() {
        // do nothing
    }

    /**
     * Retrieves a list of stopwords for a given dictionary and pager.
     *
     * @param dictId         The ID of the dictionary.
     * @param stopwordsPager The pager for controlling pagination.
     * @return A list of stopwords.
     */
    public List<StopwordsItem> getStopwordsList(final String dictId, final StopwordsPager stopwordsPager) {

     */
    public SynonymService() {
        // do nothing
    }

    /**
     * Retrieves a list of synonyms for a given dictionary and pager.
     *
     * @param dictId       The ID of the dictionary.
     * @param synonymPager The pager for controlling pagination.
     * @return A list of synonyms.
     */
    public List<SynonymItem> getSynonymList(final String dictId, final SynonymPager synonymPager) {

        }
    }

    /**
     * Merge two lists
     */
    private static <T> List<T> merge(List<T> tgt, List<T> src, boolean sourceDominant, KeyComputer<T> computer) {
        return merge(tgt, src, computer, new SourceDominant<T>(sourceDominant));
    }

    private static <T> List<T> merge(List<T> tgt, List<T> src, KeyComputer<T> computer, Remapping<T> remapping) {
        if (src.isEmpty()) {