* references, which is particularly hard to quantify.
   */

  /** Creates an empty {@code CompactHashMap} instance. */
  public static <K extends @Nullable Object, V extends @Nullable Object>
      CompactHashMap<K, V> create() {
    return new CompactHashMap<>();
  }

  /**
   * Creates a {@code CompactHashMap} instance, with a high enough "initial capacity" that it
   * <i>should</i> hold {@code expectedSize} elements without growth.

# 请求文件

`File` 用于定义客户端的上传文件。

/// info | 说明

因为上传文件以「表单数据」形式发送。

所以接收上传文件，要预先安装 <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>。

例如： `pip install python-multipart`。

///

## 导入 `File`

从 `fastapi` 导入 `File` 和 `UploadFile`：

{* ../../docs_src/request_files/tutorial001.py hl[1] *}

## 定义 `File` 参数

创建文件（`File`）参数的方式与 `Body` 和 `Form` 一样：

    private String server;

    private int port;

    private String username;

    private String password;

    private String domain;

    /**
     * Creates a new SmbAuthentication instance.
     */
    public SmbAuthentication() {
        super();
    }

    /**
     * Returns the path prefix for SMB1 URLs.
     * @return The path prefix.
     */
    public String getPathPrefix() {

public class RuleManagerImpl implements RuleManager {

    /** The list of rules managed by this rule manager. */
    protected final List<Rule> ruleList = new ArrayList<>();

    /**
     * Creates a new RuleManagerImpl instance.
     */
    public RuleManagerImpl() {
        // Default constructor
    }

    /*
     * (non-Javadoc)
     *

 */
public class FessResponseProcessor extends DefaultResponseProcessor {
    /**
     * Default constructor.
     */
    public FessResponseProcessor() {
        super();
    }

    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FessResponseProcessor.class);

    /** Factory for creating and managing ingesters */
    private IngestFactory ingestFactory = null;

        when(mockAddress.unwrap(Address.class)).thenReturn(mockAddress);

        // When & Then
        Address unwrapped = mockAddress.unwrap(Address.class);
        assertSame(mockAddress, unwrapped, "Should return same instance for supported type");
    }

    @Test
    @DisplayName("getHostName should return valid hostname or address")
    void testGetHostNameContract() {
        // Given

        assertArgumentNotNull("iterators", iterators);

        return () -> new MultiIterator<>(iterators);
    }

    /**
     * Constructs an instance.
     *
     * @param iterators the array of {@link Iterator}s (must not be {@literal null})
     */
    public MultiIterator(final Iterator<E>... iterators) {
        assertArgumentNotNull("iterators", iterators);

 * This form handles the creation of API access tokens with configurable permissions and expiration dates.
 */
public class CreateForm {

    /**
     * Creates a new CreateForm instance.
     */
    public CreateForm() {
        // Default constructor
    }

    /**
     * The CRUD operation mode for this form.
     * Indicates whether this is a create, read, update, or delete operation.

            List<ArtifactRepository> remoteRepositories) {
        this(originatingArtifact, new ArrayList<>(), missingArtifacts, remoteRepositories);
    }

    /**
     * Create an instance of the exception with all required information.
     *
     * @param originatingArtifact the artifact that was being resolved
     * @param resolvedArtifacts   artifacts that could be resolved

   * called on the {@code TypeVariable} instance has the same name as one of the public methods of
   * {@link TypeVariableImpl}, the proxy calls the same method on its instance of {@code
   * TypeVariableImpl}. Otherwise it throws {@link UnsupportedOperationException}; this should only
   * apply to {@code getAnnotatedBounds()}. This does mean that users on Java who obtain an instance