docs: def solveAndNotify(self, request):
          """Notifies the owner of the current request (so, the user doing the
          exercise) that they've solved the exercise, and mark it as
          solved in the database.
  
          """
          remote = request.transport.remote
          withThisIdentifier = Exercise.identifier == self.exerciseIdentifier
          exercise = self.store.findUnique(Exercise, withThisIdentifier)
          solveAndNotify(remote, exercise)