#cgo directives within these comments to tweak the behavior of the C, C++
or Fortran compiler. Values defined in multiple directives are concatenated
together. The directive can include a list of build constraints limiting its
effect to systems satisfying one of the constraints
(see https://golang.org/pkg/go/build/#hdr-Build_Constraints for details about the constraint syntax).
For example:

    class DisconnectingCookieJar : CookieJar {
      override fun saveFromResponse(
        url: HttpUrl,
        cookies: List<Cookie>,
      ) {}

      override fun loadForRequest(url: HttpUrl): List<Cookie> {
        callReference.get().cancel()
        return emptyList()
      }
    }
    client =
      client
        .newBuilder()

///

### Bước 5: Nội dung trả về

{* ../../docs_src/first_steps/tutorial001.py hl[8] *}

Bạn có thể trả về một `dict`, `list`, một trong những giá trị đơn như `str`, `int`,...

Bạn cũng có thể trả về Pydantic model (bạn sẽ thấy nhiều hơn về nó sau).

import java.io.StringWriter;
import java.lang.reflect.Field;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

import javax.xml.transform.OutputKeys;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;

    @Synchronized override fun onRequest(
      streamId: Int,
      requestHeaders: List<Header>,
    ): Boolean {
      assertThat(streamId).isEqualTo(2)
      events.add(requestHeaders)
      notifyAll()
      return false
    }

    @Synchronized override fun onHeaders(
      streamId: Int,
      responseHeaders: List<Header>,
      last: Boolean,
    ): Boolean {

	if err := api.Walk(ctx, r.Bucket, r.Prefix, results, WalkOptions{
		Marker: lastObject,
		Filter: selectObj,
	}); err != nil {
		cancel()
		// Do not need to retry if we can't list objects on source.
		return err
	}
	failed := false
	for res := range results {
		if res.Err != nil {
			failed = true
			batchLogIf(ctx, res.Err)
			break
		}
		result := res.Item

        queryLambda.callback(cq);
        final Collection<FilterFunctionBuilder> list = new ArrayList<>();
        if (functionsLambda != null) {
            functionsLambda.callback((cqLambda, scoreFunctionBuilder) -> {
                FileAuthenticationCQ cf = new FileAuthenticationCQ();
                cqLambda.callback(cf);
                list.add(new FilterFunctionBuilder(cf.getQuery(), scoreFunctionBuilder));
            });
        }

  }

  @Test fun proxySelectorReturnsNull() {
    val nullProxySelector: ProxySelector =
      object : ProxySelector() {
        override fun select(uri: URI): List<Proxy>? {
          assertThat(uri.host).isEqualTo(uriHost)
          return null
        }

        override fun connectFailed(
          uri: URI,
          socketAddress: SocketAddress,

                return fields;
            }
        };
        ComponentUtil.setFessConfig(fessConfig);

        queryFieldConfig.init();

        // Verify additional default list
        assertEquals(4, queryFieldConfig.additionalDefaultList.size());
        assertEquals("field1", queryFieldConfig.additionalDefaultList.get(0).getFirst());

    }

    /**
     * Handles directory listing requests for SMB directories.
     * @param req the HTTP servlet request
     * @param resp the HTTP servlet response
     * @param dir the SMB directory to list
     * @throws IOException if an I/O error occurs
     */
    protected void doDirectory(final HttpServletRequest req, final HttpServletResponse resp, final SmbFile dir) throws IOException {
        PrintWriter out;