.deleteByQuery(ComponentUtil.getFessConfig().getIndexDocumentUpdateIndex(), queryContext.getQueryBuilder());
    }

    /**
     * Extracts and normalizes language preferences from request parameters or browser locale.
     *
     * This method prioritizes explicit language parameters over browser locale settings
     * and handles special cases like "all languages" selection.
     *

				<artifactId>maven-jxr-plugin</artifactId>
				<configuration>
					<docTitle>&lt;a href="https://fess.codelibs.org/" target="_blank"&gt;Enterprise Search Server: Fess Reference&lt;/a&gt;</docTitle>
					<windowTitle>Open Source Enterprise Search: Fess Source Code Reference</windowTitle>
				</configuration>
			</plugin>
			<plugin>
				<groupId>com.mycila</groupId>
				<artifactId>license-maven-plugin</artifactId>
			</plugin>