<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _start(self):
 """ Starts streaming the feed using the provided session and feed options. """

        params = self._translate(self._options)
        self._resp = self._r_session.get(self._url, params=params, stream=True)
        self._resp.raise_for_status()
        self._lines = self._resp.iter_lines(self._chunk_size)