class Builder {
    internal var client: OkHttpClient? = null
    internal var url: HttpUrl? = null
    internal var includeIPv6 = true
    internal var post = false
    internal var systemDns = Dns.SYSTEM
    internal var bootstrapDnsHosts: List<InetAddress>? = null
    internal var resolvePrivateAddresses = false
    internal var resolvePublicAddresses = true

    fun build(): DnsOverHttps {

    @Override
    public void init(final ServletConfig config) throws ServletException {
        super.init(config);

        final Properties p = new Properties();
        p.putAll(System.getProperties());
        /*
         * Set jcifs properties we know we want; soTimeout and cachePolicy to 10min.
         */
        p.setProperty("jcifs.smb.client.soTimeout", "300000");

            dst[dstIndex] = (byte) 0x00;
            return 1;
        }

        // copy new scope in
        dst[dstIndex] = (byte) '.';
        dstIndex++;
        try {
            System.arraycopy(scope.getBytes(Name.OEM_ENCODING), 0, dst, dstIndex, scope.length());
        } catch (final UnsupportedEncodingException uee) {}
        dstIndex += scope.length();

        dst[dstIndex++] = (byte) 0x00;

 */
@Deprecated
public interface RepositorySystem {
    String DEFAULT_LOCAL_REPO_ID = MavenRepositorySystem.DEFAULT_LOCAL_REPO_ID;

    @SuppressWarnings("checkstyle:constantname")
    String userHome = System.getProperty("user.home");

    @SuppressWarnings("checkstyle:constantname")
    File userMavenConfigurationHome = new File(userHome, ".m2");

    @SuppressWarnings("checkstyle:constantname")

/**
 * A factory to create model builder instances when no dependency injection is available. Note: This class is
 * only meant as a utility for developers that want to employ the model builder outside of the Maven build system, Maven
 * plugins should always acquire model builder instances via dependency injection. Developers might want to subclass
 * this factory to provide custom implementations for some of the components used by the model builder.
 *

    // Each group is a List of items, each item has a list of factory args.
    List<List<List<Object>>> argGroups = new ArrayList<>();
    argGroups.add(ImmutableList.of(args, equalArgs));
    EqualsTester tester =
        new EqualsTester(
            /* itemReporter= */ item -> {
              List<Object> factoryArgs = argGroups.get(item.groupNumber).get(item.itemNumber);
              return factory.getName()

        }
        NodeList otherContent = classDoc.getClassSection().getChildNodes();
        for (int i = 0; i < otherContent.getLength(); i++) {
            Node child = otherContent.item(i);
            if (child instanceof Element && !((Element) child).getTagName().equals("section")) {
                parent.appendChild(document.importNode(child, true));
            }
        }
    }

///

### `yield from` { #yield-from }

When you are iterating over something, like a file-like object, and then you are doing `yield` for each item, you could also use `yield from` to yield each item directly and skip the `for` loop.

This is not particular to FastAPI, it's just Python, but it's a nice trick to know. 😎

`EventSourceResponse`는 `fastapi.sse`에서 임포트합니다:

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[1:25] hl[4,22] *}

각 `yield`된 항목은 JSON으로 인코딩되어 SSE 이벤트의 `data:` 필드로 전송됩니다.

반환 타입을 `AsyncIterable[Item]`으로 선언하면 FastAPI가 이를 사용해 데이터를 Pydantic으로 **검증**, **문서화**, **직렬화**합니다.

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[1:25] hl[10:12,23] *}

/// tip | 팁

从 `fastapi.sse` 导入 `EventSourceResponse`：

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[1:25] hl[4,22] *}

每个被 yield 的项会被编码为 JSON，并放入 SSE 事件的 `data:` 字段发送。

如果你将返回类型声明为 `AsyncIterable[Item]`，FastAPI 将使用它通过 Pydantic对数据进行**校验**、**文档化**和**序列化**。

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[1:25] hl[10:12,23] *}

/// tip | 提示

由于 Pydantic 会在**Rust** 端序列化它，相比未声明返回类型，你将获得更高的**性能**。

///