Option solrUrlOpt = obuilder.withLongName("solrUrl").withRequired(true).withArgument(
abuilder.withName("solrUrl").withMinimum(1).withMaximum(1).create()).withDescription(
"URL of the solr server").withShortName("s").create();
Group group = gbuilder.withName("Options")
.withOption(inputFileOpt)
.withOption(countFileOpt)
.withOption(outputFileOpt)
.withOption(solrUrlOpt).create();