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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 reset_modified(self):
 """ reset field modification tracking this is handy for when you are loading a new Orm with the results from a query and you don't want set() to do anything, you can Orm(**fields) and then orm.reset_modified() to clear all the passed in fields from the modified list """

        self.modified_fields = set()

        # compensate for us not having knowledge of certain fields changing
        for field_name, field in self.schema.normal_fields.items():
            if isinstance(field, ObjectField):
                self.modified_fields.add(field_name)