Merge "update docs per API council" into oc-dev

import android.os.UserManager;

import android.os.storage.StorageManager;

import android.os.storage.VolumeInfo;

import android.provider.Settings;

import android.util.AndroidException;

import android.util.Log;

     * <p>If no packages have been changed, returns <code>null</code>.

     * <p>The sequence number starts at <code>0</code> and is

     * reset every boot.

     * @param sequenceNumber The first sequence number for which to retrieve package changes.

     * @see Settings.Global#BOOT_COUNT

     */

    public abstract @Nullable ChangedPackages getChangedPackages(

            @IntRange(from=0) int sequenceNumber);