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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 stop(self, timeout: int = 5) -> None: """ Try to stop the transaction store in the given timeout or raise an exception. """

        self.running = False
        start = time.perf_counter()
        while True:
            if self.getsCounter == 0:
                return True
            elif time.perf_counter() <= start + timeout:
                time.sleep(.1)
            else:
                raise StopTimeout("Stop timed out waiting for {} gets to "
                                  "complete.".format(self.getsCounter))