UMLR — Section: 18.3.8

The reader may be led to believe that the application of the stereotype <<clock>> changed the model by adding an operation "Click" to the class StopWatch. It should be clarified that the operation must be owned by the StopWatch even without applying the stereotype. The stereotype instance may, of course, be associated to this operation, and serves as a pointer, for example, to be used in model transformations. Figure 18.18 does not provide this information; it shows the result of the application and not the state before.