public void testOffer_nullSupported() {
    assertTrue("offer(null) should return true", getQueue().offer(null));
    expectAdded((E) null);
  }

  @CollectionFeature.Require(value = SUPPORTS_ADD, absent = ALLOWS_NULL_VALUES)
  public void testOffer_nullUnsupported() {
    assertThrows(NullPointerException.class, () -> getQueue().offer(null));
    expectUnchanged();

 */
@Retention(RetentionPolicy.CLASS)
@Target({ElementType.TYPE, ElementType.METHOD})
@Documented
@GwtCompatible
public @interface GwtCompatible {

  /**
   * Obsolete; formerly used to indicate when a value was GWT serializable back before Guava dropped
   * support for GWT serialization.
   *
   * @see <a href=
   *     "https://www.gwtproject.org/doc/latest/DevGuideServerCommunication#DevGuideSerializableTypes">

        final Map<String, Object> source = new LinkedHashMap<>();
        source.put("field\"name", "value");

        final String json = new JsonIndexExportFormatter().format(source, Collections.emptySet());

        assertTrue(json.contains("\"field\\\"name\": \"value\""));
    }

    @Test
    public void test_jsonFormatter_singleField() {

     *
     * @param project the project to modify
     * @param key they property's key
     * @param value the value or {@code null} to unset the property
     */
    void setProperty(@Nonnull Project project, @Nonnull String key, @Nullable String value);

    /**
     * Returns the original project being built when the input project is a forked project.

* `Form()`
* `File()`

該 `dict` 的鍵用來識別各個範例，而每個值則是另一個 `dict`。

在 `examples` 中，每個範例的 `dict` 可以包含：

* `summary`：範例的簡短描述。
* `description`：較長的描述，可包含 Markdown 文字。
* `value`：實際顯示的範例，例如一個 `dict`。
* `externalValue`：`value` 的替代方案，為指向範例的 URL。儘管這可能不如 `value` 被工具廣泛支援。

你可以這樣使用：

{* ../../docs_src/schema_extra_example/tutorial005_an_py310.py hl[23:49] *}

### 文件 UI 中的 OpenAPI 範例 { #openapi-examples-in-the-docs-ui }

	// empty should return false.
	formats[0] = nil

	if ok := formatErasureV3ThisEmpty(formats); ok {
		t.Fatalf("expected value false, got %t", ok)
	}

	formats[2].Erasure.This = ""
	if ok := formatErasureV3ThisEmpty(formats); !ok {
		t.Fatalf("expected value true, got %t", ok)
	}
}

// Tests xl format migration.
func TestFormatErasureMigrate(t *testing.T) {
	// Get test root.

        if (c.superclass != null) {
            collect(result, c.superclass)
        }
    }

    private List<String> filterChangesToReport(CtClass c, Map<String, CtClass> interfaces) {
        return interfaces.values().findAll { implementedDirectly(it, c) && addedInterfaceIsIncubatingOrInternal(it, c) }*.name.sort()
    }

    private boolean implementedDirectly(CtClass interf, CtClass c) {

  @SuppressLint("NewApi")
  override fun getSelectedProtocol(sslSocket: SSLSocket): String? =
    try {
      // SSLSocket.getApplicationProtocol returns "" if application protocols values will not
      // be used. Observed if you didn't specify SSLParameters.setApplicationProtocols
      when (val protocol = sslSocket.applicationProtocol) {
        null, "" -> null
        else -> protocol
      }

 *
 * @author Kevin Bourrillion
 */
@NullUnmarked
public class SetContainsBenchmark {
  // Start at 4.88 then multiply by 2*2^phi <evil cackle> - The goal is be uniform
  // yet visit a variety of "values-relative-to-the-next-power-of-2"
  @Param({"5", "30", "180", "1100", "6900", "43000", "260000"}) // "1600000", "9800000"
  private int size;

  // TODO(kevinb): look at exact (==) hits vs. equals() hits?

 * shared resources.
 *
 * @param <K> the most general type of keys this listener can listen for; for example {@code Object}
 *     if any key is acceptable
 * @param <V> the most general type of values this listener can listen for; for example {@code
 *     Object} if any key is acceptable
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
@FunctionalInterface
public interface RemovalListener<K, V> {
  /**