* @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface ModelProblemCollector {

    /**
     * Adds the specified problem.
     *
     * @param req must not be null
     */
    void add(ModelProblemCollectorRequest req);

     */
    @Override
    protected Pattern getTagPattern() {
        // not used
        return null;
    }

    /**
     * Adds a feature to the extractor.
     *
     * @param key   the key of the feature
     * @param value the value of the feature
     */
    public void addFeature(final String key, final String value) {

    protected WebApiManager[] webApiManagers = {};

    /**
     * Adds a web API manager to the factory.
     *
     * @param webApiManager The web API manager to add
     */
    public void add(final WebApiManager webApiManager) {
        final List<WebApiManager> list = new ArrayList<>();
        Collections.addAll(list, webApiManagers);
        list.add(webApiManager);

     */
    public SmbAuthenticationHolder() {
        super();
    }

    /**
     * Adds an SMB authentication configuration to the holder.
     *
     * @param auth the SMB authentication configuration to add
     */
    public void add(final SmbAuthentication auth) {
        authMap.put(auth.getPathPrefix(), auth);
    }

    /**

Here's a visual representation of how the **proxy** adds forwarded headers between the client and the **application server**:

```mermaid
sequenceDiagram
    participant Client
    participant Proxy as Proxy/Load Balancer
    participant Server as FastAPI Server

    Client->>Proxy: HTTPS Request<br/>Host: mysuperapp.com<br/>Path: /items

    Note over Proxy: Proxy adds forwarded headers

	maps.Copy(setCopy, set)
	return setCopy
}

// add - adds TargetID to the set.
func (set TargetIDSet) add(targetID TargetID) {
	set[targetID] = struct{}{}
}

// Union - returns union with given set as new set.
func (set TargetIDSet) Union(sset TargetIDSet) TargetIDSet {
	nset := set.Clone()

	for k := range sset {
		nset.add(k)
	}

	return nset
}

/**
 * Verifies that subclasses from generated model classes are possible.
 */
class ExtendedPluginDescriptorTest {

    /**
     * A subclass of the generated class {@link PluginDescriptor} that adds an additional field.
     */
    static class ExtendedPluginDescriptor extends PluginDescriptor {

        private final String additionalField;

        ExtendedPluginDescriptor(Builder builder) {

      super(capacity);
    }

    /**
     * Adds {@code element} to the {@code ImmutableList}.
     *
     * @param element the element to add
     * @return this {@code Builder} object
     * @throws NullPointerException if {@code element} is null
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<E> add(E element) {
      super.add(element);
      return this;
    }

    /**

        }
        return convertedUrl;
    }

    /**
     * Adds a conversion rule.
     *
     * @param target The target string.
     * @param replacement The replacement string.
     */
    public void add(final String target, final String replacement) {
        if (target == null || replacement == null) {

    /**
     * A map of script engines.
     */
    protected Map<String, ScriptEngine> scriptEngineMap = new LinkedHashMap<>();

    /**
     * Adds a script engine.
     * @param name The name of the script engine.
     * @param scriptEngine The script engine.
     */
    public void add(final String name, final ScriptEngine scriptEngine) {
        if (name == null || scriptEngine == null) {
            throw new IllegalArgumentException(