* comment: Metadata fields to exclude from document content.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getCrawlerMetadataContentExcludes();

    /**
     * Get the value for the key 'crawler.metadata.name.mapping'. <br>
     * The value is, e.g. title=title:string<br>
     * Title=title:string<br>
     * dc:title=title:string<br>