value.put(keys.get(2), "ja");
        value.put(keys.get(3), "str");
        docMap = new DocMap(value);
        assertFalse(docMap.isEmpty());

        Set<Map.Entry<String, Object>> actual = docMap.entrySet();
        assertTrue(actual.size() == keys.size());
        docMap.clear();

        assertTrue(docMap.isEmpty());
    }

    @Test
    public void test_constructor() {

        // we test the current behavior
        String appType = ResourceUtil.getAppType();
        assertNotNull(appType);
        // appType should be either empty string or the actual env value
        assertTrue(appType.isEmpty() || appType.length() > 0);
    }

    @Test
    public void test_getOverrideConfPath() {
        // Test when app type is not docker

    assertThat(body.byteString()).isEqualTo(ByteString.EMPTY)
  }

  @Test
  fun byteStringSeesBom() {
    val body = body("efbbbf68656c6c6f")
    val actual = body.byteString()
    val expected: ByteString = "efbbbf68656c6c6f".decodeHex()
    assertThat(actual).isEqualTo(expected)
  }

  @Test
  fun byteStringClosesUnderlyingSource() {
    val closed = AtomicBoolean()
    val body: ResponseBody =

        handlers.clear();
    }

    /**
     * Pre-populates the protocol handlers cache with mock handlers for testing.
     * This avoids the need for actual protocol handlers to be available.
     */
    private void setupMockProtocolHandlers() throws Exception {
        Field handlersField = Handler.class.getDeclaredField("PROTOCOL_HANDLERS");

    void toString_rendersHex(byte[] input, String expected) {
        // Arrange
        SecurityBlob blob = new SecurityBlob(input);

        // Act
        String actual = blob.toString();

        // Assert
        assertEquals(expected, actual, "Hex string should match expected format");
    }

    // Ensures a default-constructed blob starts empty and stable across APIs
    @Test

## Return Type and Data Filtering { #return-type-and-data-filtering }

Let's continue from the previous example. We wanted to **annotate the function with one type**, but we wanted to be able to return from the function something that actually includes **more data**.

We want FastAPI to keep **filtering** the data using the response model. So that even though the function returns more data, the response will only include the fields declared in the response model.

        CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {
            while (handle.isActive()) {
                try {
                    // Note: Actual SMB2 Change Notify implementation would go here
                    // For now, this is a placeholder that simulates monitoring

                    // In a real implementation, we would:

        block.uid = 0x1234;
        block.useUnicode = true;

        byte[] buf = new byte[256];
        int n = block.writeAndXWireFormat(buf, 0);

        assertTrue(n > 0);
        // Note: In actual implementation, uid is NOT propagated for non-AndX SMBs
        // uid is only set for AndXServerMessageBlock instances (line 167 in AndXServerMessageBlock.java)
        // Only useUnicode is set before the instanceof check (line 149)

    extends AbstractMap<K, V> implements Serializable {
  /*
   * TODO: Make this a drop-in replacement for j.u. versions, actually drop them in, and test the
   * world. Figure out what sort of space-time tradeoff we're actually going to get here with the
   * *Map variants. This class is particularly hard to benchmark, because the benefit is not only in

 *     .method("GET")
 *     .url("https://example.com")
 *     .weight(1.0f)
 *     .build();
 * </pre>
 *
 * <p>The builder is implemented using an inner class {@link RequestDataContext} that handles
 * the actual construction of the RequestData object.</p>
 *
 */
public final class RequestDataBuilder {
    private RequestDataBuilder() {
    }

    /**