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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 deserialize(cls, string):
 """Reconstruct a previously serialized string back into an instance of a ``CacheModel``."""


        data = json.loads(string)
        for fieldname, value in data.items():
            data[fieldname] = getattr(cls, fieldname).cache_to_python(value)
        return cls(**data)