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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 generate_model(self, model_name=None):
 """Generate model maps for all components. model_name should be a unique identifier for the model. If model_name is None then the model maps will be generated using the current parameters of the ROI."""


        for i, c in enumerate(self._components):
            c.generate_model(model_name=model_name)