def METHOD_NAME(self):
    def fm_func(string: str) -> Iterable[str]:
        return string.strip().split(" ")
    dq, path_tmp, pre = self.seed_small_grep(self.file_10e0)
    dq.flatmap(fm_func) \
        .store_textfile(path_tmp, '\n')
    def convert_validation(file):
        return chain.from_iterable(map(fm_func, filter(pre, file.readlines())))
    def convert_outputed(file):
        return file.read().splitlines()
    self.validate_files(
        self.file_10e0,
        path_tmp,
        convert_validation,
        convert_outputed
    )