}, "A PACDecodingException should be thrown for a malformed token.");

        assertEquals("Malformed kerberos ticket", exception.getMessage(), "The exception message should indicate a malformed ticket.");
    }

    /**
     * Test constructor with an empty token.
     * Empty token causes readObject() to return null, which leads to NullPointerException.
     */
    @Test

{* ../../docs_src/background_tasks/tutorial001_py310.py hl[14] *}

`.add_task()` 接收以下参数：

* 在后台运行的任务函数(`write_notification`)。
* 应按顺序传递给任务函数的任意参数序列(`email`)。
* 应传递给任务函数的任意关键字参数(`message="some notification"`)。

## 依赖注入 { #dependency-injection }

使用 `BackgroundTasks` 也适用于依赖注入系统，你可以在多个级别声明 `BackgroundTasks` 类型的参数：在 *路径操作函数* 里，在依赖中(可依赖)，在子依赖中，等等。

**FastAPI** 知道在每种情况下该做什么以及如何复用同一对象，因此所有后台任务被合并在一起并且随后在后台运行：

            throw AssertionError("unsupported hashAlgorithm: ${pin.hashAlgorithm}")
          }
        }
      }
    }

    // If we couldn't find a matching pin, format a nice exception.
    val message =
      buildString {
        append("Certificate pinning failure!")
        append("\n  Peer certificate chain:")
        for (element in peerCertificates) {
          append("\n    ")

        try {
            ReflectionValueExtractor.evaluate("h.value[1]", new ValueHolder("string"));
        } catch (Exception e) {
            // TODO assert exception message
        }
    }

    /**
     * <p>testIllegalMappedType.</p>
     *
     * @throws Exception if any.
     */
    @Test
    public void testIllegalMappedType() throws Exception {

        String message = String.format(
            Locale.ROOT,
            "The %s must be set to a JDK installation directory for Java %d but is [%s] corresponding to [%s]",
            description,
            expectedVersion,
            javaHome,
            actualVersion
        );

        throw new GradleException(message);
    }

  }

  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  /** Hasher that updates a message digest. */
  private static final class MessageDigestHasher extends AbstractByteHasher {
    private final MessageDigest digest;
    private final int bytes;
    private boolean done;

import java.io.UnsupportedEncodingException;

import jcifs.Configuration;
import jcifs.internal.smb1.trans.SmbComTransaction;
import jcifs.internal.util.SMBUtil;

/**
 * SMB1 NetServerEnum2 request message for enumerating network servers in a domain or workgroup.
 * This class implements the SMB1 transaction to query for available servers, supporting various
 * server types and filtering options for network browsing functionality.
 */

package jcifs.internal.smb1.trans2;

import jcifs.Configuration;
import jcifs.internal.smb1.trans.SmbComTransaction;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * Trans2 FindNext2 request message for SMB1 directory enumeration continuation.
 * This class implements the TRANS2_FIND_NEXT2 transaction to retrieve subsequent
 * directory entries after a Trans2FindFirst2 request, supporting large directory listings.
 */

import jcifs.internal.fscc.FileStandardInfo;
import jcifs.internal.smb1.trans.SmbComTransaction;
import jcifs.internal.smb1.trans.SmbComTransactionResponse;

/**
 * Trans2 QueryPathInformation response message for file metadata queries.
 * This class handles the response from a TRANS2_QUERY_PATH_INFORMATION request,
 * returning various file information levels based on the requested information level.
 */

```json
{
    "reason": <string>
}
```

The reason message is returned to the client.

## Example Plugin Implementation