* avoiding these options entirely, this class allows a connection to be attempted with modern
 * options and then retried without them should the attempt fail.
 *
 * ## Connection Reuse
 *
 * Each connection can carry a varying number of streams, depending on the underlying protocol being
 * used. HTTP/1.x connections can carry either zero or one streams. HTTP/2 connections can carry any

   * also be non-null.
   *
   * <p>If either or both endpoints are not already present in this graph, this method will silently
   * {@link #addNode(Object) add} each missing endpoint to the graph.
   *
   * <p>If {@code edge} already connects an endpoint pair equal to {@code endpoints}, then this
   * method will have no effect.
   *

   * java.util.Collection} specified in the {@link Map} interface.
   */
  @Override
  Set<V> values();

  /**
   * Returns the inverse view of this bimap, which maps each of this bimap's values to its
   * associated key. The two bimaps are backed by the same data; any changes to one will appear in
   * the other.
   *

    }
    Object result;
    try {
      result = supplier.get();
    } catch (Throwable t) {
      if (predicate.apply(t)) {
        // We are careful to set up INSTANCE_OF to match each Predicate to its target Class.
        @SuppressWarnings("unchecked")
        T caught = (T) t;
        return caught;
      }
      throw new AssertionError(

  abstract int distinctElements();

  // Object methods

  /**
   * {@inheritDoc}
   *
   * <p>This implementation returns {@code true} if {@code object} is a multiset of the same size
   * and if, for each element, the two multisets have the same count.
   */
  @Override
  public final boolean equals(@Nullable Object object) {
    return Multisets.equalsImpl(this, object);
  }

  /**
   * {@inheritDoc}

@ExtendWith(MockitoExtension.class)
public class ResponseTest {

    @Mock
    private Response mockResponse;

    @BeforeEach
    void setUp() {
        // Reset mock before each test to ensure clean state
        // MockitoExtension handles this automatically for @Mock fields, but good to be aware.
    }

    @Test
    void testIsReceived() {

///

## **FastAPI** utilities { #fastapi-utilities }

FastAPI provides several tools for each of these security schemes in the `fastapi.security` module that simplify using these security mechanisms.

In the next chapters you will see how to add security to your API using those tools provided by **FastAPI**.

                eclipseModel.getClasspath().getFile().whenMerged(c -> {
                    Classpath classpath = (Classpath) c;

                    /*
                     * give each source folder a unique corresponding output folder
                     * outside of the usual `build` folder. We can't put the build
                     * in the usual build folder because eclipse becomes *very* sad

  }

  @Test
  public void edgeValueOrDefault_undirected_mismatch() {
    graph = ValueGraphBuilder.undirected().build();
    graph.putEdgeValue(1, 2, "A");
    // Check that edgeValueOrDefault() throws on each possible ordering of an ordered EndpointPair
    IllegalArgumentException e =
        assertThrows(
            IllegalArgumentException.class,

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets 用戶端 { #websockets-client }

### 在生產環境 { #in-production }

在你的生產系統中，你很可能有一個使用現代框架（如 React、Vue.js 或 Angular）建立的前端。

而為了透過 WebSockets 與後端通訊，你通常會使用前端的工具。

或者你可能有一個原生行動應用，使用原生程式碼直接與 WebSocket 後端通訊。

又或者你有其他任何方式與 WebSocket 端點通訊。

---

但在這個範例中，我們會用一個非常簡單的 HTML 文件與一些 JavaScript，全都寫在一個長字串裡。