Fix bug where I'd accidentally override threading.Thread internals

pipe_io_server/pipe_io_server.py

@@ -47,14 +47,14 @@ class PipeIOServer(ABC, Thread):
         for thread in self._io_threads:
             thread.start()
         self._stop_event.wait()
-        self._stop()
+        self._stop_threads()
 
     def stop(self):
         self._stop_event.set()
         if self.is_alive():
             self.join()
 
-    def _stop(self):
+    def _stop_threads(self):
         for thread in self._io_threads:
             if thread.is_alive():
                 thread.stop()