*
   * <p>When passed a key that is present in the map, {@code asMap().get(Object)} has the same
   * behavior as {@link #get}, returning a live collection. When passed a key that is not present,
   * however, {@code asMap().get(Object)} returns {@code null} instead of an empty collection.
   *

   * that {@link #get} calls exactly the implementation of {@link AbstractFuture#get}.
   */
  abstract static class TrustedFuture<V extends @Nullable Object> extends AbstractFuture<V>
      implements Trusted<V> {
    @CanIgnoreReturnValue
    @Override
    @ParametricNullness
    public final V get() throws InterruptedException, ExecutionException {
      return super.get();
    }

    @CanIgnoreReturnValue

`@app.get("/")` 告诉 **FastAPI** 在它下方的函数负责处理如下访问请求：

* 请求路径为 `/`
* 使用 <dfn title="一种 HTTP GET 方法"><code>get</code> 操作</dfn>

/// info | `@decorator` 信息

`@something` 语法在 Python 中被称为「装饰器」。

像一顶漂亮的装饰帽一样，将它放在一个函数的上方（我猜测这个术语的命名就是这么来的）。

装饰器接收位于其下方的函数并且用它完成一些工作。

在我们的例子中，这个装饰器告诉 **FastAPI** 位于其下方的函数对应着**路径** `/` 加上 `get` **操作**。

它是一个「**路径操作装饰器**」。

///

        assertFalse(dataMap.containsKey("n.overwrite"));

        // m and n are updated with overwrite values, p is merged normally
        assertEquals("M1", dataMap.get("m"));
        assertEquals("N1", dataMap.get("n"));
        assertEquals("P1", dataMap.get("p"));
        assertEquals(3, dataMap.size());
    }

    @Test
    public void test_isUrlCrawlable_noExcludePattern() {

      @Override
      Multiset<Integer> get() {
        return ConcurrentHashMultiset.create();
      }
    },
    BOXED_ATOMIC_REPLACE() {
      @Override
      Multiset<Integer> get() {
        return OldConcurrentHashMultiset.create();
      }
    },
    SYNCHRONIZED_MULTISET() {
      @Override
      Multiset<Integer> get() {

        // Verify status code
        Integer status = JsonPath.from(response).get("response.status");
        assertEquals(Integer.valueOf(0), status, "Status should be 0");

        // Verify version field exists
        String version = JsonPath.from(response).get("response.version");
        assertNotNull(version, "Version should not be null");

   *
   * <p>When passed a key that is present in the map, {@code asMap().get(Object)} has the same
   * behavior as {@link #get}, returning a live collection. When passed a key that is not present,
   * however, {@code asMap().get(Object)} returns {@code null} instead of an empty collection.
   *

            List<Integer> invalidLines = IntStream.range(0, lines.size())
                .filter(i -> allPatterns.matcher(lines.get(i)).find())
                .boxed()
                .collect(Collectors.toList());

            URI baseUri = getRootDir().orElse(projectLayout.getProjectDirectory().getAsFile()).get().toURI();
            String path = baseUri.relativize(f.toURI()).toString();
            failures.addAll(

    title = project.name
    versionFile = repoRoot().file("version.txt")
    releasedVersionsFile = releasedVersionsFile()
    sources.from(sourceSets.main.get().java.sourceDirectories)
    sources.from(sourceSets.main.get().groovy.sourceDirectories)
    htmlReportFile = file(layout.buildDirectory.file("reports/incubation/${project.name}.html"))

  abstract fun clean(
    chain: List<Certificate>,
    hostname: String,
  ): List<Certificate>

  companion object {
    fun get(trustManager: X509TrustManager): CertificateChainCleaner = Platform.get().buildCertificateChainCleaner(trustManager)

    fun get(vararg caCerts: X509Certificate): CertificateChainCleaner = BasicCertificateChainCleaner(BasicTrustRootIndex(*caCerts))
  }