buf.append("\t-V | --version <version>       specify api-version used for generated jar file\n");
	public String usage() {		StringBuffer buf = new StringBuffer(super.usage());		buf.append("\t-p | --package <package>       <optional>\n");		buf.append("\t-m | --import <package>        (can be repeated)\n");		buf.append("\t-t | --visitable               [off]\n");		buf.append("\t--nojar                        Do not generate Jar file [off]\n");		return buf.toString();	}