/** Returns the tag attached with [type] as a key, or null if no tag is attached with that key. */
  fun <T : Any> tag(type: KClass<T>): T? = type.java.cast(tags[type])

  /**
   * Returns the tag attached with `Object.class` as a key, or null if no tag is attached with
   * that key.
   *
   * Prior to OkHttp 3.11, this method never returned null if no tag was attached. Instead it

    This applies to `Authorization`, `Cookie`, `Proxy-Authorization`, and `Set-Cookie` headers.
 *  Fix: Don't crash with an `InaccessibleObjectException` when running on JDK17+ with strong
    encapsulation enabled.
 *  Fix: Strictly verify hostnames used with OkHttp's `HostnameVerifier`. Programs that make direct
    manual calls to `HostnameVerifier` could be defeated if the hostnames they pass in are not

    private NameServiceClientImpl nameServiceClient;

    @BeforeEach
    void setUp() throws UnknownHostException {
        // Configure mock context with fast timeouts
        when(mockContext.getConfig()).thenReturn(mockConfig);

        // Setup configuration with minimal timeouts for fast testing
        when(mockConfig.getNetbiosSoTimeout()).thenReturn(100); // Very short timeout

            assertEquals(inputValue & 0xFF, ndrShort.value, "Constructor should mask value with 0xFF");
        }

        @Test
        @DisplayName("Should handle zero value correctly")
        void testConstructorZero() {
            // Given/When: Creating NdrShort with zero
            NdrShort ndrShort = new NdrShort(0);

            // Then: Value should be zero

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

## Header Parameters with a Pydantic Model { #header-parameters-with-a-pydantic-model }

Declare the **header parameters** that you need in a **Pydantic model**, and then declare the parameter as `Header`:

        // Test constructor with null message
        PluginException exception = new PluginException(null);

        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withNullMessageAndCause() {
        // Test constructor with null message and null cause

 * This interface provides a contract for different script engine implementations
 * to process template strings with parameter substitution.
 */
public interface ScriptEngine {

    /**
     * Evaluates a template string with the provided parameter map.
     * The template is processed using the script engine's templating mechanism,

        // Test constructor with message only
        String message = "SSO login failed";
        SsoLoginException exception = new SsoLoginException(message);

        assertEquals(message, exception.getMessage());
        assertNull(exception.getCause());
    }

    public void test_constructor_withMessageAndCause() {
        // Test constructor with message and cause

	disk, err := newLocalXLStorage(tmpPath)
	if err != nil {
		t.Fatalf("Initializing xlStorage failed with %s.", err)
	}

	// Attempt to create a volume to verify the permissions later.
	// MakeVol creates directory with 0777 perms.
	if err = disk.MakeVol(t.Context(), testCase.volName); err != nil {
		t.Fatalf("Creating a volume failed with %s expected to pass.", err)
	}

	// Attempt to create a file to verify the permissions later.

* The same with `app/routers/users.py`, it's another submodule: `app.routers.users`.
* There's also a subdirectory `app/internal/` with another file `__init__.py`, so it's another "Python subpackage": `app.internal`.
* And the file `app/internal/admin.py` is another submodule: `app.internal.admin`.

<img src="/img/tutorial/bigger-applications/package.drawio.svg">

The same file structure with comments:

```
.