public @SemanticAction
        int getSemanticAction() {
            return mSemanticAction;
        }
Returns the {@link SemanticAction} associated with this {@link Action}. A
{@link SemanticAction} denotes what an {@link Action}'s {@link PendingIntent} will do
(eg. reply, mark as read, delete, etc).

@see SemanticAction
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/compat/NotificationCompat.java