protected static String argumentExpression(ArgumentItem argItem) {
StringBuilder line = new StringBuilder();
Argument arg = argItem.getArgumentDescriptor();
String format;
if (arg.required()) format = argItem.takesMultipleArguments() ? "%s ..." : "%s";
else format = argItem.takesMultipleArguments() ? "[%s ...]" : "[%s]";
String name = StringUtil.varNameToNaturalName(argItem.getArgumentName());
line.append(String.format(format, name));
return line.toString();
}
