rewritten = rewritten.replaceAll("GRADLE-\\d+", "<a href=\"https://issues.gradle.org/browse/$0\">$0</a>");
        // Turn Gradle Github issue numbers into issue links
        rewritten = rewritten.replaceAll("(gradle/[a-zA-Z\\-_]+)#(\\d+)", "<a href=\"https://github.com/$1/issues/$2\">$0</a>");
        document.body().html(rewritten);

        return new StringReader(document.toString());
    }

@CacheableTask
public abstract class FindBrokenInternalLinks extends DefaultTask {

    private final Pattern linkPattern = Pattern.compile("<<([^,>]+)[^>]*>>");
    private final Pattern linkWithHashPattern = Pattern.compile("([a-zA-Z_0-9-.]*)#(.*)");
    private final Pattern javadocLinkPattern = Pattern.compile("link:\\{javadocPath\\}/(.*?\\.html)");

    @InputDirectory
    @PathSensitive(PathSensitivity.RELATIVE)

    private static final String JAVA_EXECUTABLE_PATTERN_STR = "java(?:\\.exe)?";
    private static final String GRADLE_MAIN_CLASS_PATTERN_STR = "(org\\.gradle\\.[a-zA-Z]+)";
    private static final String PLAY_SERVER_PATTERN_STR = "(play\\.core\\.server\\.NettyServer)";
    private static final String JAVA_PROCESS_STACK_TRACES_MONITOR_PATTERN_STR = "(JavaProcessStackTracesMonitor\\.java)";