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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 from_optional_dicts(cls, ds: Optional[List[dict]], force_snake_case: bool=True, force_cast: bool=False, restrict: bool=True) -> TOption[TList[T]]: """From list of dict to optional list of instance. :param ds: List of dict :param force_snake_case: Keys are transformed to snake case in order to compliant PEP8 if True :param force_cast: Cast forcibly if True :param restrict: Prohibit extra parameters if True :return: List of instance Usage: True [] """

        return TOption(cls.from_dicts(ds,
                                      force_snake_case=force_snake_case,
                                      force_cast=force_cast,
                                      restrict=restrict) if ds is not None else None)