code: public static void main (String[] args) throws IOException {
  	if (args.length < 1) {
  	    System.out.println("Usage: java opennlp.maxent.io.OldFormatGISModelReader model_name_prefix (new_model_name)");
  	    System.exit(0);
  	}
  
  	int nameIndex = 0;
  
  	String infilePrefix = args[nameIndex];
  	String outfile;
  
  	if (args.length > nameIndex)
  	    outfile = args[nameIndex+1];
  	else
  	    outfile = infilePrefix + ".bin.gz";
  
  
  	GISModelReader reader = new OldFormatGISModelReader(infilePrefix);
  
  	new SuffixSensitiveGISModelWriter(reader.getModel(),
  					  new File(outfile)).persist();
  				   
      }
docs: Convert a model created with Maxent 1.0 to a format used with
  Maxent 1.2.
  
  <p>Usage: java opennlp.maxent.io.OldFormatGISModelReader model_name_prefix (new_model_name)");
  
  <p>If the new_model_name is left unspecified, the new model will be saved
  in gzipped, binary format as "<model_name_prefix>.bin.gz".