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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _lock_netmiko_session(self, start=None):
 """Try to acquire the Netmiko session lock. If not available, wait in the queue until the channel is available again. :param start: Initial start time to measure the session timeout :type start: float (from time.time() call i.e. epoch time) """

        if not start:
            start = time.time()
        # Wait here until the SSH channel lock is acquired or until session_timeout exceeded
        while not self._session_locker.acquire(False) and not self._timeout_exceeded(
            start, "The netmiko channel is not available!"
        ):
            time.sleep(0.1)
        return True