Template alias parameter does not accept types

[ref2401]

Version D 2.062
http://dlang.org/template.html#TemplateAliasParameter
Is is said in the documentation that is's possible but i get 
compile time error.

template GetString(alias Arg)
{
        enum string GetString = Arg.stringof;
}

void main(string[] argv)
{
        writeln(GetString!"1234");
        writeln(GetString!18);
        
	writeln(GetString!int); // Error: template instance 
GetString!(int)
                                // GetString!(int) does not match template
                                // declaration GetString(alias Arg)
        
        readln();
}