How to add a new property to this class.
I added it to the GMSMarker.h file, but when I tried to use the new property I got this error:
- [GMSMarker setId:]: unrecognized selector sent to instance 0x790cd410 2015-02-27 13: 26: 44.340 Testing [7174: 108607] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '- [GMSMarker setIdRegister:]: unrecognized selector sent to instance 0x790cd410 '