# Header Parameter Models { #header-parameter-models }

If you have a group of related **header parameters**, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

    @Override
    public List<Integer> create(Object... elements) {
      Integer[] array = new Integer[elements.length];
      int i = 0;
      for (Object e : elements) {
        array[i++] = (Integer) e;
      }
      return create(array);
    }

    /**
     * Creates a new collection containing the given elements; implement this method instead of
     * {@link #create(Object...)}.
     */

    int64_t local_rendezvous_cache_active_size;
  };
  virtual CacheStats GetCacheStats() = 0;

  //===--------------------------------------------------------------------===//
  // Distributed runtime related functions.
  //===--------------------------------------------------------------------===//
#if !defined(IS_MOBILE_PLATFORM)
  // Set up a multi-client distributed execution environment. Must be called on

  // ArrayBlockingQueue

  /**
   * Creates an empty {@code ArrayBlockingQueue} with the given (fixed) capacity and nonfair access
   * policy.
   */
  @J2ktIncompatible
  @GwtIncompatible // ArrayBlockingQueue
  public static <E> ArrayBlockingQueue<E> newArrayBlockingQueue(int capacity) {
    return new ArrayBlockingQueue<>(capacity);
  }

  // ArrayDeque

  /**
   * Creates an empty {@code ArrayDeque}.
   *

    //                                         -------------
    /**
     * Creates a new file configuration.
     *
     * @param form the create form
     * @return HTML response after creation
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse create(final CreateForm form) {
        verifyCrudMode(form.crudMode, CrudMode.CREATE, this::asListHtml);
        validate(form, messages -> {}, this::asEditHtml);

    }

    @Override
    public SampleElements<Entry<K, V>> samples() {
      return multimapGenerator.samples();
    }

    @Override
    public Collection<Entry<K, V>> create(Object... elements) {
      return multimapGenerator.create(elements).entries();
    }

    @SuppressWarnings("unchecked")
    @Override
    public Entry<K, V>[] createArray(int length) {
      return (Entry<K, V>[]) new Entry<?, ?>[length];

   *
   * <p>For undirected graphs, this is equal to {@code incidentEdges(node).size()} + (number of
   * self-loops incident to {@code node}).
   *
   * <p>If the count is greater than {@code Integer.MAX_VALUE}, returns {@code Integer.MAX_VALUE}.
   *
   * @throws IllegalArgumentException if {@code node} is not an element of this graph
   */
  @Override
  int degree(N node);

  /**

    this.delegate = new ArrayDeque<>(maxSize);
    this.maxSize = maxSize;
  }

  /**
   * Creates and returns a new evicting queue that will hold up to {@code maxSize} elements.
   *
   * <p>When {@code maxSize} is zero, elements will be evicted immediately after being added to the
   * queue.
   */
  public static <E> EvictingQueue<E> create(int maxSize) {
    return new EvictingQueue<>(maxSize);
  }

  /**

 * {@code jcifs.smb.client.username}, and {@code jcifs.smb.client.password}
 * properties.
 * <p>
 * Read <a href="../../../authhandler.html">jCIFS Exceptions and
 * NtlmAuthenticator</a> for related information.
 *
 * @deprecated use {@link NtlmPasswordAuthenticator} instead
 */
@Deprecated
public class NtlmPasswordAuthentication extends NtlmPasswordAuthenticator {

    /**
     *
     */

    private String domain;

    private Integer overrideTimeout;

    /**
     * Creates a new SMB message with default command.
     *
     * @param config the configuration to use
     */
    protected ServerMessageBlock(final Configuration config) {
        this(config, (byte) 0);
    }

    /**
     * Creates a new SMB message with the specified command.
     *
     * @param config the configuration to use