* Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**
     * The timestamp when this boost document configuration was last updated.
     * Stored as a long value representing milliseconds since epoch.
     * Used for audit trail and concurrency control.
     */
    @ValidateTypeFailure

     * Used for audit trail purposes to track who made changes.
     * Maximum length is 255 characters.
     */
    @Size(max = 255)
    public String updatedBy;

    /**
     * The timestamp when this file authentication configuration was last updated.
     * Stored as a long value representing milliseconds since epoch.
     * Used for audit trail and concurrency control.
     */

     * The username of the user who last updated this file configuration.
     * Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**
     * The timestamp when this file configuration was last updated.
     * Stored as a long value representing milliseconds since epoch.
     * Used for audit trail and concurrency control.
     */
    @ValidateTypeFailure

     * Used for audit trail purposes to track who made changes.
     * Maximum length is 255 characters.
     */
    @Size(max = 255)
    public String updatedBy;

    /**
     * The timestamp when this key match configuration was last updated.
     * Stored as a long value representing milliseconds since epoch.
     * Used for audit trail and concurrency control.
     */
    @ValidateTypeFailure

     * The username of the user who last updated this web configuration.
     * Used for audit trail purposes to track who made changes.
     */
    @Size(max = 1000)
    public String updatedBy;

    /**
     * The timestamp when this web configuration was last updated.
     * Stored as a long value representing milliseconds since epoch.
     * Used for audit trail and concurrency control.
     */
    @ValidateTypeFailure

      - [**Admission Control**](#admission-control)
      - [**API & API server**](#api-&-api-server)
      - [**Audit**](#audit)
      - [**Custom Resources**](#custom-resources)
      - [**Other**](#other)
    - [**Apps**](#apps-1)
    - [**Auth**](#auth-3)
      - [**Audit**](#audit-1)
      - [**RBAC**](#rbac)
      - [**Other**](#other-1)
      - [**GCE**](#gce)
    - [**Autoscaling**](#autoscaling)

  * The `--audit-policy-file` option is required if the `AdvancedAuditing` feature is not explicitly turned off (`--feature-gates=AdvancedAuditing=false`) on the API server.
  * The audit log file defaults to JSON encoding when using the advanced auditing feature gate.
  * An audit policy file without either an `apiVersion` or a `kind` field may be treated as invalid.

bernetes.io/docs/reference/generated/kubernetes-api/v1.13/#tokenreview-v1-authentication-k8s-io) for the new tokens for improved scoping. Under audit logging, the new alpha-level "dynamic audit configuration" adds support for [dynamically registering webhooks to receive a stream of audit events](https://kubernetes.io/docs/tasks/debug/debug-cluster/audit/#webhook-backend). Finally, we've enhanced secrets protection by graduating [etcd encryption](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/)...

- `audit.k8s.io/v1beta1` and `audit.k8s.io/v1alpha1` audit policy configuration and audit events are deprecated in favor of `audit.k8s.io/v1`, available since v1.13. kube-apiserver invocations that specify alpha or beta policy configurations with `--audit-policy-file`, or explicitly request alpha or beta audit events with `--audit-log-version` / `--audit-webhook-version` must update to use `audit.k8s.io/v1` and accept `audit.k8s.io/v1` events prior...

        // Default constructor
    }

    /**
     * The logger.
     */
    protected Logger logger = null;

    /**
     * The logger name.
     */
    protected String loggerName = "fess.log.audit";

    /**
     * The permission separator.
     */
    protected String permissionSeparator = "|";

    /**
     * The flag to use ECS format.
     */
    protected boolean useEcsFormat = false;