Use @IntDef for manage actions

    private static final int STATE_NOT_READY = 0;

    // Keyphrase management actions. Used in getManageIntent() ----//

    /** @hide */

    @Retention(RetentionPolicy.SOURCE)

    @IntDef(value = {

                MANAGE_ACTION_ENROLL,

                MANAGE_ACTION_RE_ENROLL,

                MANAGE_ACTION_UN_ENROLL

            })

    public @interface ManageActions {}

    /** Indicates that we need to enroll. */

    public static final int MANAGE_ACTION_ENROLL = 0;

    /** Indicates that we need to re-enroll. */

     *         This may happen if another detector has been instantiated or the

     *         {@link VoiceInteractionService} hosting this detector has been shut down.

     */

    public Intent getManageIntent(int action) {

    public Intent getManageIntent(@ManageActions int action) {

        if (DBG) Slog.d(TAG, "getManageIntent(" + action + ")");

        synchronized (mLock) {

            return getManageIntentLocked(action);