public Builder setSound(Uri sound, @StreamType int streamType) {
            mNotification.sound = sound;
            mNotification.audioStreamType = streamType;
            if (Build.VERSION.SDK_INT >= 21) {
                mNotification.audioAttributes = new AudioAttributes.Builder()
                        .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                        .setLegacyStreamType(streamType)
                        .build();
            }
            return this;
        }
Set the sound to play.  It will play on the stream you supply.

<p>
On some platforms, a notification that is noisy is more likely to be presented
as a heads-up notification.
</p>

@see Notification#STREAM_DEFAULT
@see AudioManager for the <code>STREAM_</code> constants.
android/android_framework/base/src/main/java/github/tornaco/android/thanos/core/compat/NotificationCompat.java