@Override
    public String toString() {
        return "Rule{" +
                "ruleId='" + ruleId + '\'' +
                ", applicationName='" + applicationName + '\'' +
                ", serviceType='" + serviceType + '\'' +
                ", checkerName='" + checkerName + '\'' +
                ", threshold=" + threshold +
                ", userGroupId='" + userGroupId + '\'' +
                ", smsSend=" + smsSend +
                ", emailSend=" + emailSend +
                ", webhookSend=" + webhookSend +
                ", notes='" + notes + '\'' +
                '}';
    }
@deprecated Since 3.1.0. Use {@link #getApplicationName()} instead
web/src/main/java/com/navercorp/pinpoint/web/alarm/vo/Rule.java