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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 create_missing_type_variants(cls, type_names, type_dict):
 """ Create missing type variants for types with a cardinality field. :param type_names: List of type names with cardinality field suffix. :param type_dict: Type dictionary with named type converters. :return: Type dictionary with missing type converter variants. """

        missing_type_names = [ name for name in type_names
                               if name not in type_dict ]
        return cls.create_type_variants(missing_type_names, type_dict)