Asciidoctor asciidoctor = null;
asciidoctor = buildAsciidoctorJInstance(asciidoctorCliOptions);
if(asciidoctorCliOptions.isVersion()) {
System.out.println("Asciidoctor "+asciidoctor.asciidoctorVersion()+" [http://asciidoctor.org]");
}
List<File> inputFiles = getInputFiles(asciidoctorCliOptions);
if (inputFiles.isEmpty()) {