comment method
Implementation
String comment() {
final argParser = args.ArgParser();
addArguments(argParser);
final usage = argParser.usage;
const ls = LineSplitter();
final lines = ls.convert(usage);
final result = StringBuffer();
for(var i = 0; i < lines.length; i++) {
final line = lines[i];
if(i > 0) {
result.writeln();
result.write(" ");
}
result.write("// $line");
}
return result.toString();
}