code: protected void i_setSuperclassName(String i_subclassName, String i_superclassName) {
          i_superclassNameMap.put(i_subclassName, i_superclassName);
  
          if (tc.isDebugEnabled()) {
              Tr.debug(tc, MessageFormat.format("[ {0} ] Subclass [ {1} ] has superclass [ {2} ]",
                                                new Object[] { getHashText(), i_subclassName, i_superclassName }));
          }
      }
docs: When reading from serialization, don't set the referenced classes.