public Builder setCategory(String category) {
            mCategory = category;
            return this;
        }
Set the notification category.

<p>Must be one of the predefined notification categories (see the <code>CATEGORY_*</code>
constants in {@link Notification}) that best describes this notification.
May be used by the system for ranking and filtering.
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/compat/NotificationCompat.java