docs: def from_yamlf(cls, fpath: str, encoding: str='utf8',
                     force_snake_case=True, force_cast: bool=False, restrict: bool=True) -> T:
          """From yaml file path to instance
  
          :param fpath: Yaml file path
          :param encoding: Yaml file encoding
          :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: Instance
          """
          return cls.from_dict(util.load_yamlf(fpath, encoding),
                               force_snake_case=force_snake_case,
                               force_cast=force_cast,
                               restrict=restrict)