@OutputFile
    public File getTarget() {
        return target;
    }

    @Input
    public List<String> getAdditionalLines() {
        return additionalLines;
    }

    public void setAdditionalLines(List<String> additionalLines) {
        this.additionalLines = additionalLines;
    }

    @TaskAction
    public void concatFiles() throws IOException {
        if (getHeaderLine() != null) {