<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def borrow_or_take(self, now, can_borrow):
 """ Decide whether to borrow or take one quota from the reservoir. Return ``False`` if it can neither borrow nor take. This method is thread-safe. """

        with self._lock:
            return self._borrow_or_take(now, can_borrow)