Merge "Document the expected value of volume control id parameter" into udc-dev

import android.media.AudioManager;

import android.media.MediaMetadata;

import android.media.Rating;

import android.media.RoutingSessionInfo;

import android.media.VolumeProvider;

import android.media.VolumeProvider.ControlType;

import android.media.session.MediaSession.QueueItem;

         * @param maxVolume The max volume. Should be equal or greater than zero.

         * @param currentVolume The current volume. Should be in the interval [0, maxVolume].

         * @param audioAttrs The audio attributes for this playback. Should not be null.

         * @param volumeControlId The volume control ID. This is used for matching

         *                        {@link RoutingSessionInfo} and {@link MediaSession}.

         * @param volumeControlId The {@link RoutingSessionInfo#getId() routing session id} of the

         *     {@link RoutingSessionInfo} associated with this controller, or null if not

         *     applicable. This id allows mapping this controller to a routing session which, when

         *     applicable, provides information about the remote device, and support for volume

         *     adjustment.

         * @hide

         */

        @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)