* 数据库模型。
    * ……以及更多。
* 自动生成的交互式 API 文档，包括两种可选的用户界面：
    * Swagger UI。
    * ReDoc。

---

回到之前的代码示例，**FastAPI** 将会：

* 校验 `GET` 和 `PUT` 请求的路径中是否包含 `item_id`。
* 校验 `GET` 和 `PUT` 请求中的 `item_id` 是否为 `int` 类型。
    * 如果不是，客户端会看到清晰有用的错误信息。
* 对于 `GET` 请求，检查是否存在名为 `q` 的可选查询参数（如 `http://127.0.0.1:8000/items/foo?q=somequery`）。
    * 因为参数 `q` 被声明为 `= None`，所以它是可选的。
    * 如果没有 `None`，它就是必需的（就像 `PUT` 情况下的请求体）。

var (
	ODirectPoolLarge  = NewAlignedBytePool(LargeBlock)
	ODirectPoolMedium = NewAlignedBytePool(MediumBlock)
	ODirectPoolSmall  = NewAlignedBytePool(SmallBlock)
)

// Get a block.
func (p *AlignedBytePool) Get() *[]byte {
	return p.p.Get()
}

// Put a block.
func (p *AlignedBytePool) Put(pb *[]byte) {
	if pb != nil && len(*pb) == p.size {
		p.p.Put(pb)
	}
}

    }
    if (op_type_.empty()) {
      return errors::FailedPrecondition(
          "GraphOperation::Reset must be called before calling SetOpName.");
    }
    // TODO(b/145674566): We use Graph::NewName to get a unique name here but
    // this may not be consistent with python's naming policy.
    mutex_lock l(g_->mu);
    op_.reset(new TF_OperationDescription(g_, op_type_.c_str(),

        runningField.setAccessible(true);
        ((AtomicBoolean) runningField.get(null)).set(false);

        Field errorsField = Crawler.class.getDeclaredField("errors");
        errorsField.setAccessible(true);
        ((Queue<?>) errorsField.get(null)).clear();
    }

    // Test addError method
    @Test
    public void test_addError_withValidMessage() {

        }
    }

    /**
     * Get validation statistics
     */
    public ValidationStats getStats() {
        return new ValidationStats(totalValidations.get(), failedValidations.get(), bufferOverflowsPrevented.get(),
                integerOverflowsPrevented.get());
    }

    /**
     * Reset statistics
     */
    public void resetStats() {

     *
     * @param key The name of the method.
     * @return List list of methods
     */
    List<Method> get(String key) {
        return methodByNameMap.get(key);
    }

    /**
     * Find a method.  Attempts to find the
     * most specific applicable method using the
     * algorithm described in the JLS section
     * 15.12.2 (with the exception that it can't
     * distinguish a primitive type argument from

import org.gradle.testkit.runner.TaskOutcome

class YamlRestCompatTestPluginFuncTest extends AbstractRestResourcesFuncTest {

    def compatibleVersion = Version.fromString(VersionProperties.getVersions().get("elasticsearch")).getMajor() - 1
    def specIntermediateDir = "restResources/v${compatibleVersion}/yamlSpecs"
    def testIntermediateDir = "restResources/v${compatibleVersion}/yamlTests"

  private var contentLength = -1L

  @get:JvmName("boundary")
  val boundary: String
    get() = boundaryByteString.utf8()

  /** The number of parts in this multipart body. */
  @get:JvmName("size")
  val size: Int
    get() = parts.size

  fun part(index: Int): Part = parts[index]

  override fun isOneShot(): Boolean = parts.any { it.body.isOneShot() }

    certificateChainCleaner = certificateChainCleaner,
  )

  override val eventListener: EventListener
    get() = call.eventListener

  override val followSslRedirects: Boolean
    get() = call.client.followSslRedirects

  override val followRedirects: Boolean
    get() = call.client.followRedirects

  override fun connection(): Connection? = exchange?.connection

    val shadowPackagePrefix =
        shadowPackage.takeIf(String::isNotEmpty)
            ?.let { it.replace('.', '/') + "/" }
            ?: ""

    operator fun get(className: String) =
        classes.computeIfAbsent(className) {
            val outputClassName = if (unshadedPackages.matches(className)) className else shadowPackagePrefix + className