private Map<String, String> prepareUserData(AlertDetails alertDetails) {
    Map<String, String> userData = new HashMap<>();

    userData.put(ALERT_LEVEL, getAlertLevelAsString(alertDetails.getAlertLevel()));
    userData.put(THREAD, alertDetails.getSource());
    userData.put(MEMBER, getNameOrId(alertDetails.getSender()));

    return userData;
  }
Sends the alert with the Object source as member. This notification will get filtered out for
particular alert level
geode-core/src/main/java/org/apache/geode/management/internal/beans/ManagementAdapter.java