The `security_scopes` object (of class `SecurityScopes`) also provides a `scope_str` attribute with a single string, containing those scopes separated by spaces (we are going to use it).

We create an `HTTPException` that we can re-use (`raise`) later at several points.

路径装饰器依赖项也可以使用普通的依赖项*函数*。

### 依赖项的需求项

路径装饰器依赖项可以声明请求的需求项（比如响应头）或其他子依赖项：

```Python hl_lines="6  11"
{!../../../docs_src/dependencies/tutorial006.py!}
```

### 触发异常

路径装饰器依赖项与正常的依赖项一样，可以 `raise` 异常：

```Python hl_lines="8  13"
{!../../../docs_src/dependencies/tutorial006.py!}
```

### 返回值

无论路径装饰器依赖项是否返回值，路径操作都不会使用这些值。

因此，可以复用在其他位置使用过的、（能返回值的）普通依赖项，即使没有使用这个值，也会执行该依赖项：

    assertThat(response3.body.string()).isEqualTo("GHI")
    // Settings connection.
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(0)
    // Reuse settings connection.
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(1)
    // Reuse settings connection.
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(2)
    // New connection!

org.sonatype.aether:aether-impl
org.sonatype.aether:aether-spi
org.sonatype.aether:aether-util

------------------------------------------------------------------------------
3-Clause BSD
https://opensource.org/licenses/BSD-3-Clause

com.google.code.findbugs:jsr305

org.hamcrest:hamcrest-core
BSD License

Copyright (c) 2000-2015 www.hamcrest.org
All rights reserved.

          coordinatorWakeUpAt = now + minDelayNanos
          try {
            backend.coordinatorWait(this@TaskRunner, minDelayNanos)
          } catch (_: InterruptedException) {
            // Will cause all tasks to exit unless more are scheduled!
            cancelAll()
          } finally {
            coordinatorWaiting = false
          }
        }
      }
    }
  }

#   your builds. This usually saves a lot of time, especially when
#   re-running tests. However, note that:
#
#    - New environments like new CUDA versions, changes to manylinux,
#      compilers, etc. can cause undefined behavior such as build failures
#      or tests passing incorrectly.
#    - Automatic LLVM updates are known to extend build time even with
#      the cache; this is unavoidable.

}

fun Dependencies.compileAllDependency(compileAllId: String) {
    // Compile All has to succeed before anything else is started
    dependsOn(RelativeId(compileAllId))
    // Get the build receipt from sanity check to reuse the timestamp
    artifacts(RelativeId(compileAllId)) {
        id = "ARTIFACT_DEPENDENCY_$compileAllId"
        cleanDestination = true
        artifactRules = "build-receipt.properties => incoming-distributions"
    }

   * example, extensions type IDs specify what types to use for the corresponding values.
   *
   * If the hint is unknown [chooser] should return null which will cause the value to be decoded as
   * an opaque byte string.
   *
   * This may optionally wrap the contents in a tag.
   */
  fun usingTypeHint(chooser: (Any?) -> DerAdapter<*>?): DerAdapter<Any?> {

But then, even though you still don't have your burgers, your work with the cashier is "on pause" ⏸, because you have to wait 🕙 for your burgers to be ready.

    taskFaker.advanceUntil(ns(500L))
    server.processNextFrame() // Ping.
    client.processNextFrame() // Pong.

    // After 1000ms the client will attempt a ping 2, but we don't process it. That'll cause the
    // client to fail at 1500ms when it's time to send ping 3 because pong 2 hasn't been received.
    taskFaker.advanceUntil(ns(1000L))
    taskFaker.advanceUntil(ns(1500L))
    client.listener.assertFailure(