Merge "log info to help tracing in notifyNewRingingConnectionP"

     * version scoped to their packages

     */

    public void notifyNewRingingConnectionP(Connection cn) {

        Rlog.i(LOG_TAG, String.format(

                "notifyNewRingingConnection: phoneId=[%d], connection=[%s], registrants=[%s]",

                getPhoneId(), cn, getNewRingingConnectionRegistrantsAsString()));

        if (!mIsVoiceCapable)

            return;

        AsyncResult ar = new AsyncResult(null, cn, null);

        mNewRingingConnectionRegistrants.notifyRegistrants(ar);

    }

    /**

     * helper for notifyNewRingingConnectionP(Connection) to create a string for a log message.

     *

     * @return a list of objects in mNewRingingConnectionRegistrants as a String

     */

    private String getNewRingingConnectionRegistrantsAsString() {

        List<String> registrants = new ArrayList<>();

        for (int i = 0; i < mNewRingingConnectionRegistrants.size(); i++) {

            registrants.add(mNewRingingConnectionRegistrants.get(i).toString());

        }

        return String.join(", ", registrants);

    }

    /**

     * Notify registrants of a new unknown connection.

     */