if (StringUtil.isNotBlank(regex)) {
                clientMap.put(Pattern.compile(regex), client);
            }
        }
    }

    /**
     * Retrieves a client that matches the given URL key.
     * @param urlKey The URL key to match.
     * @return The matching CrawlerClient instance, or null if no match is found.
     */
    public CrawlerClient getClient(final String urlKey) {

    testFuture3.setFuture(testFuture2);
    assertThat(testFuture3.toString())
        .matches(
            "[^\\[]+\\[status=PENDING, setFuture=\\[[^\\[]+\\[status=PENDING,"
                + " info=\\[cause=\\[Someday...]]]]]");
    testFuture2.set("result string");
    assertThat(testFuture3.toString())
        .matches("[^\\[]+\\[status=SUCCESS, result=\\[java.lang.String@\\w+\\]\\]");
  }

            throw new IllegalArgumentException("Username exceeds maximum length: " + username.length());
        }
        if (!username.isEmpty() && !VALID_USERNAME.matcher(username).matches()) {
            throw new IllegalArgumentException("Username contains invalid characters: " + username);
        }
    }

    /**
     * Validates domain name
     *

 * shared with the {@code re2j} library. For internal use only. Please refer to the {@code Matcher}
 * javadoc for details.
 */
@GwtCompatible
abstract class CommonMatcher {
  public abstract boolean matches();

  public abstract boolean find();

  public abstract boolean find(int index);

  public abstract String replaceAll(String replacement);

  public abstract int end();

  public abstract int start();

        }

        @Override
        public ResponseProcessor getResponseProcessor() {
            return responseProcessor;
        }
    }

    /**
     * Conditional test rule that matches based on URL pattern
     */
    public static class UrlPatternRule implements Rule {
        private static final long serialVersionUID = 1L;
        private final String ruleId;
        private final String urlPattern;

func (e metaCacheEntry) hasPrefix(s string) bool {
	return strings.HasPrefix(e.name, s)
}

// matches returns if the entries have the same versions.
// If strict is false we allow signatures to mismatch.
func (e *metaCacheEntry) matches(other *metaCacheEntry, strict bool) (prefer *metaCacheEntry, matches bool) {
	if e == nil && other == nil {
		return nil, true
	}
	if e == nil {
		return other, false
	}

        scriptType = ComponentUtil.getFessConfig().getCrawlerDefaultScript();
    }

    /**
     * Determines if the given document data matches the configured match expression.
     *
     * @param map the document data as a map of field names to values
     * @return true if the document matches the expression, false otherwise
     */
    public boolean match(final Map<String, Object> map) {

            }

            if (value != null) {
                for (final Map.Entry<Pattern, String> entry : passwordMap.entrySet()) {
                    if (entry.getKey().matcher(value).matches()) {
                        return entry.getValue();
                    }
                }
            }
        }

        if (params != null && url != null) {

            logger.debug("replace: {} -> {}", url, newUrl);
        }
        return newUrl;
    }

    /**
     * Checks if the user agent matches the path mapping.
     *
     * @param pathMapping the path mapping
     * @return true if the user agent matches
     */
    protected boolean matchUserAgent(final PathMapping pathMapping) {
        if (!pathMapping.hasUAMathcer()) {
            return true;
        }

	}

	// Deserialize the checksum from bytes
	chksmOut := ChecksumFromBytes(b)
	if chksmOut == nil {
		t.Fatal("ChecksumFromBytes returned nil")
	}

	// Assert new checksum matches the content
	matchError := chksmOut.Matches(myData, 0)
	if matchError != nil {
		t.Fatalf("Checksum mismatch on chksmOut: %v", matchError)
	}

	// Assert they are exactly equal
	if !chksmOut.Equal(chksm) {