Merge "Updating documentation for registerReceiver."

     *

     * @param receiver The BroadcastReceiver to handle the broadcast.

     * @param filter Selects the Intent broadcasts to be received.

     * @param flags Additional options for the receiver. As of

     * Android T, either {@link #RECEIVER_EXPORTED} or

     * @param flags Additional options for the receiver. For apps targeting

     * {@link android.os.Build.VERSION_CODES#TIRAMISU},

     *              either {@link #RECEIVER_EXPORTED} or

     * {@link #RECEIVER_NOT_EXPORTED} must be specified if the receiver isn't being registered

     *            for protected broadcasts, and may additionally specify

     *            {@link #RECEIVER_VISIBLE_TO_INSTANT_APPS} if {@link #RECEIVER_EXPORTED} is

     *            specified.

     *              for protected broadcasts or an exception will be thrown. If

     *              {@link #RECEIVER_EXPORTED} is specified, a receiver may additionally

     *              specify {@link #RECEIVER_VISIBLE_TO_INSTANT_APPS}. For a complete list of

     *              protected broadcast actions, see the BROADCAST_ACTIONS.TXT file in the

     *              Android SDK. If both {@link #RECEIVER_EXPORTED} and

     *              {@link #RECEIVER_NOT_EXPORTED} are specified, an exception will be thrown as

     *              well.

     *

     * @return The first sticky intent found that matches <var>filter</var>,

     *         or null if there are none.