* Renamed file, added events and set _addPayee to private
* unwanted file
* adjusted test
* adjusted test
* PaymentReceived event added
* Added event testing.
* Fix static tests
(cherry picked from commit a07499796a)
* Renamed file, added events and set _addPayee to private
* unwanted file
* adjusted test
* adjusted test
* PaymentReceived event added
* Added event testing.
* Fix static tests
(cherry picked from commit a07499796a)