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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_app_model_classes(self):
 """ Helper method that returns a list of model classes for the current app. """

        models = []
        for m in self.models:
            mod, cls = m.rsplit('.', 1)
            mod = import_module(mod)
            models.append(getattr(mod, cls))
        return models