@TaskAction
    public void checkInvalidPermissions() throws IOException {
        if (Os.isFamily(Os.FAMILY_WINDOWS)) {
            throw new StopExecutionException();
        }
        List<String> failures = getFiles().getFiles()
            .stream()
            .filter(FilePermissionsTask::isExecutableFile)
            .map(file -> "Source file is executable: " + file)
            .collect(Collectors.toList());

        patterns.put("tab", "\t");
    }

    @InputFiles
    @PathSensitive(PathSensitivity.RELATIVE)
    @SkipWhenEmpty
    public FileCollection getFiles() {
        return getSourceFolders().get()
            .stream()
            .map(sourceFolder -> sourceFolder.matching(filesFilter))
            .reduce(FileTree::plus)

            // we can't figure out the commit ID (probably this is a source distribution build), let's skip adding source links
            return;
        }

        extension.getSourceRoots().getFiles()
            .forEach(
                file -> {
                    DokkaSourceLinkSpec sourceLinkSpec = project.getObjects().newInstance(DokkaSourceLinkSpec.class);

            files -> files.stream().filter(each -> each.delete() == false).collect(Collectors.toSet()),
            QualifiedVersion.of(VersionProperties.getElasticsearch()),
            this.getChangelogs().getFiles(),
            this.dryRun,
            this.rootDir
        );
    }

    @VisibleForTesting
    static void findAndDeleteFiles(
        GitWrapper gitWrapper,
        DeleteHelper deleteHelper,

    }

    @TaskAction
    public void executeTask() {
        final URI rootDir = projectLayout.getProjectDirectory().getAsFile().toURI();
        final Map<String, ChangelogEntry> changelogs = this.changelogs.getFiles()
            .stream()
            .collect(Collectors.toMap(file -> rootDir.relativize(file.toURI()).toString(), ChangelogEntry::parse));

        });

        // Find any source files with "@notice" annotated license header
        for (File sourceFile : sources.getFiles()) {
            boolean isPackageInfo = sourceFile.getName().equals("package-info.java");
            boolean foundNotice = false;
            boolean inNotice = false;

    public URI getLocationURI() {
        return getFile().toURI();
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (!(obj instanceof FileModelSource)) {
            return false;
        }
        FileModelSource other = (FileModelSource) obj;
        return getFile().equals(other.getFile());
    }

    @Override

    @Override
    public void artifactInstalling(RepositoryEvent event) {
        logger.info("Installing {} to {}", event.getArtifact().getFile(), event.getFile());
    }

    @Override
    public void metadataInstalling(RepositoryEvent event) {
        logger.debug("Installing {} to {}", event.getMetadata(), event.getFile());
    }

    @Override
    public void metadataResolved(RepositoryEvent event) {

                this.getBoost(), this.getTags().toArray(new String[this.getTags().size()]),
                this.getRoles().toArray(new String[this.getRoles().size()]), null, SuggestItem.Kind.USER);
    }

    public void artifactInstalled(RepositoryEvent event) {
        println("artifactInstalled", event.getArtifact() + " to " + event.getFile());
    }

    @Override
    public void artifactInstalling(RepositoryEvent event) {
        println("artifactInstalling", event.getArtifact() + " to " + event.getFile());
    }

    @Override
    public void artifactResolved(RepositoryEvent event) {