@PathSensitive(PathSensitivity.RELATIVE)
    public abstract DirectoryProperty getJavadocRoot();

    @OutputFile
    public abstract RegularFileProperty getReportFile();

    @TaskAction
    public void checkDeadLinks() {
        Map<File, List<Error>> errors = new TreeMap<>();

        getDocumentationRoot().getAsFileTree().matching(pattern -> pattern.include("**/*.adoc")).forEach(file -> {
            gatherDeadLinksInFile(file, errors);