Enable the stream thread

        This operation will ensure that the thread that is responsible
        for connecting to the WVA and triggering event callbacks is started.
        This thread will continue to run and do what it needs to do to
        maintain a connection to the WVA.

        The status of the thread can be monitored by calling :meth:`get_status`.

def enable(self):
        """Enable the stream thread

        This operation will ensure that the thread that is responsible
        for connecting to the WVA and triggering event callbacks is started.
        This thread will continue to run and do what it needs to do to
        maintain a connection to the WVA.

        The status of the thread can be monitored by calling :meth:`get_status`.
        """
        with self._lock:
            if self._event_listener_thread is None:
                self._event_listener_thread = WVAEventListenerThread(self, self._http_client)
                self._event_listener_thread.start()