Fixed handling of nested classes in relative namespaces

src/common/model/element.h

@@ -60,6 +60,8 @@ public:
         return name_and_ns();
     }
 
+    virtual std::string full_name_no_ns() const { return name(); }
+
     void set_using_namespaces(const namespace_ &un);
 
     const namespace_ &using_namespace() const;