// "SCHILY.xattr." namespace.
	//
	// The following are semantically equivalent:
	//  h.Xattrs[key] = value
	//  h.PAXRecords["SCHILY.xattr."+key] = value
	//
	// When Writer.WriteHeader is called, the contents of Xattrs will take
	// precedence over those in PAXRecords.
	//
	// Deprecated: Use PAXRecords instead.
	Xattrs map[string]string

	// PAXRecords is a map of PAX extended header records.
	//

Y también después de que se genere la `response`, antes de devolverla.

Por ejemplo, podrías añadir un custom header `X-Process-Time` que contenga el tiempo en segundos que tomó procesar la request y generar una response:

{* ../../docs_src/middleware/tutorial001.py hl[10,12:13] *}

/// tip | Consejo

     * When enabled, suggestions are generated from previous searches.
     */
    @Size(max = 10)
    public String suggestSearchLog;

    /**
     * Enable or disable search suggestions based on document content.
     * When enabled, suggestions are generated from indexed documents.
     */
    @Size(max = 10)
    public String suggestDocuments;

    /**

    <example>${fe:replace(input, regex, replacement)}</example>
  </function>

  <function>
    <description>Format a content as code.</description>
    <name>formatCode</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>

        // Buffer length is based on maximum_length/2 from the encoded data
        assertEquals(translatedName.name.maximum_length / 2, decodedName.name.buffer.length);
        // Verify the actual string content
        for (int i = 0; i < translatedName.name.buffer.length; i++) {
            assertEquals(translatedName.name.buffer[i], decodedName.name.buffer[i]);
        }

 *
 * <p>Duplicate host configurations allow administrators to define hostname patterns
 * that should be treated as equivalent during crawling. This helps avoid indexing
 * duplicate content from the same logical site that may be accessible via different
 * hostnames (e.g., www.example.com and example.com).</p>
 */
public class DuplicateHostService extends FessAppService {

    /**

    public void test_constructor_withLongMessage() {
        // Test constructor with long message
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            sb.append("Long message content ");
        }
        String longMessage = sb.toString();

        CommandExecutionException exception = new CommandExecutionException(longMessage);

        assertNotNull(exception);

/**
 * API action for admin duplicate host management.
 * Provides RESTful API endpoints for managing duplicate host settings in the Fess search engine.
 * Duplicate host settings help prevent indexing the same content from multiple similar URLs.
 *
 */
public class ApiAdminDuplicatehostAction extends FessApiAdminAction {

    private static final Logger logger = LogManager.getLogger(ApiAdminDuplicatehostAction.class);

<h2>검색방법</h2>
<dl>
	<dt>필드 지정 검색</dt>
	<dd>
		필드 이름 뒤에 콜론 :에 지정된 모든 필드에서 검색 할 수 있습니다.
		예를 들어, 문서의 title 필드에서 Fess가 포함 된 문서를 검색하려면 다음과 같이 입력합니다.
		<pre>title:Fess</pre>
		기본으로 사용 가능한 필드는 url, host, site, title content,
		content_length, last_modified 및 mimetype입니다.
		설정에서 지정하는 필드는 변경할 수 있습니다.
	</dd>
	<dt>정렬</dt>
	<dd>
		sort 연산자는 지정된 필드 이름으로 문서를 정렬합니다.
		sort 연산자의 사용 방법은 sort:&lt;field&gt;.&lt;order&gt;입니다.

      "important_content": {
        "type": "text",
        "analyzer": "standard_analyzer",
        "search_analyzer": "standard_search_analyzer",
        "term_vector": "with_positions_offsets"
      },
      "content": {
        "type": "text",
        "analyzer": "standard_analyzer",
        "search_analyzer": "standard_search_analyzer",
        "term_vector": "with_positions_offsets",
        "copy_to": ["content_minhash_bits"]