code: @Override
      public synchronized Enumeration getAttributeNames() {
          if (com.ibm.ejs.ras.TraceComponent.isAnyTracingEnabled() && LoggingUtil.SESSION_LOGGER_CORE.isLoggable(Level.FINE)) {
              String s = _attributeNames + appNameAndIdString;
              LoggingUtil.SESSION_LOGGER_CORE.logp(Level.FINE, methodClassName, "getAttributeNames", s);
          }
          return _attributeNames.keys();
      }
docs: /*
  (non-Javadoc)
  
  @see com.ibm.wsspi.session.ISession#getAttributeNames()