UnitsExtensionDemo.java:14: error: [assignment] incompatible types in assignment.
    frq = 5;
          ^
  found   : @UnknownUnits int
  required: @Hz int
UnitsExtensionDemo.java:67: error: [assignment] incompatible types in assignment.
    @Hz int badTernaryAssign = seconds > 10 ? hertz : kilohertz;
                                                      ^
  found   : @Hz(Prefix.kilo) int
  required: @Hz int
2 errors
