private void logError(Exception e) {
    final DeltaSessionManager<?> deltaSessionManager = getDeltaSessionManager();
    if (deltaSessionManager != null) {
      deltaSessionManager.getLogger().error(e);
    }
  }
Return the <code>HttpSession</code> for which this object is the facade.
extensions/geode-modules/src/main/java/org/apache/geode/modules/session/catalina/DeltaSession.java