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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 save_history(self, f):
 """Saves the history of ``NeuralNet`` as a json file. In order to use this feature, the history must only contain JSON encodable Python data structures. Numpy and PyTorch types should not be in the history. Parameters f : file-like object or str Examples -------- """

        # TODO: Remove warning in a future release
        warnings.warn(
            "save_history is deprecated and will be removed in the next "
            "release, please use save_params with the f_history keyword",
            DeprecationWarning)

        self.history.to_file(f)