code: private String typeParameters(Options opt, ParameterizedType t) {
  	if (t == null)
  	    return "";
  	StringBuffer tp = new StringBuffer(1000).append("&lt;");
  	Type args[] = t.typeArguments();
  	for (int i = 0; i < args.length; i++) {
  	    tp.append(type(opt, args[i], true));
  	    if (i != args.length - 1)
  		tp.append(", ");
  	}
  	return tp.append("&gt;").toString();
      }
docs: Print the parameters of the parameterized type t