public class Address
{
    public Address ()
    {
        
    }
}
@@ -58,10 +58,81 @@
   %0A    %7D
+%0A%0A    public String identifier ()%0A    %7B%0A%0A    %7D%0A%0A    private String _id;
 %0A%7D

Update Address.java