Pattern[] patterns = (Pattern[]) propMap.get(CRAWLER_METADATA_CONTENT_EXCLUDES);
        if (patterns == null) {
            patterns = split(getCrawlerMetadataContentExcludes(), ",")
                    .get(stream -> stream.filter(StringUtil::isNotBlank).map(Pattern::compile).toArray(n -> new Pattern[n]));
            propMap.put(CRAWLER_METADATA_CONTENT_EXCLUDES, patterns);
        }

    /** The key of the configuration. e.g.  */
    String CRAWLER_DOCUMENT_FILE_DEFAULT_EXCLUDE_INDEX_PATTERNS = "crawler.document.file.default.exclude.index.patterns";

    /** The key of the configuration. e.g.  */
    String CRAWLER_DOCUMENT_FILE_DEFAULT_INCLUDE_SEARCH_PATTERNS = "crawler.document.file.default.include.search.patterns";

crawler.document.html.default.lang=
# Patterns to include for HTML index processing.
crawler.document.html.default.include.index.patterns=
# Patterns to exclude for HTML index processing.
crawler.document.html.default.exclude.index.patterns=(?i).*(css|js|jpeg|jpg|gif|png|bmp|wmv|xml|ico|exe)
# Patterns to include for HTML search processing.
crawler.document.html.default.include.search.patterns=
# Patterns to exclude for HTML search processing.

 * status values, field names, date/time formats, authentication types, and various reserved words and patterns.
 *
 * <p>Key constant categories include:</p>
 * <ul>
 * <li>System configuration property keys</li>
 * <li>Default values for crawling and indexing operations</li>
 * <li>User agent strings and patterns for web crawling</li>
 * <li>Status constants for job execution and system states</li>