def _get_options(self, stream_type):
if not stream_type in self._stream_downloader_factories:
raise UnknownStreamTypeError(stream_type)
return self._stream_options[stream_type]
def _get_validator(self, stream_type):
if not stream_type in self._sd_info_validators:
raise UnknownStreamTypeError(stream_type)
return self._sd_info_validators[stream_type]