code: public void sessionUserNameSet(ISession session, String oldUserName, String newUserName) {
          _sessionStateEventDispatcher.sessionUserNameSet(session, oldUserName, newUserName);
  
      }
docs: Method sessionUserNameSet
  <p>
  
  @param session
  @param oldUserName
  @param newUserName
  @see com.ibm.wsspi.session.IStoreCallback#sessionUserNameSet(com.ibm.wsspi.session.ISession, java.lang.String, java.lang.String)