Merge "Throw exception from addServiceAnnouncement impl"

     * callback may include any of the errors that are not specific to the streaming use-case.

     *

     * May throw an {@link IllegalStateException} when the middleware has not yet been bound,

     * or an {@link IllegalArgumentException} if the byte array is too large.

     * or an {@link IllegalArgumentException} if the byte array is too large, or an

     * {@link UnsupportedOperationException} if the middleware has not implemented this method.

     *

     * @param contents The contents of the service announcement descriptor received from the

     *                     group call server. If the size of this array is greater than the value of

    @Override

    public @MbmsErrors.MbmsError int addServiceAnnouncement(

            int subscriptionId, @NonNull byte[] contents) {

        return 0;

        throw new UnsupportedOperationException("addServiceAnnouncement not supported by"

                + " this middleware.");

    }

    /**