2940                     def buffer_callback(obj):  function
2943                                        buffer_callback=buffer_callback)
2962                                buffer_callback=[].append)
2965                 buffer_callback = lambda pb: buffers.append(pb.raw())  function
2967                                   buffer_callback=buffer_callback)
3002             buffer_callback = buffers.append
3003             data = self.dumps(obj, proto, buffer_callback=buffer_callback)
3018         def buffer_callback(buffers):  function
3022             self.dumps(pb, 5, buffer_callback=buffer_callback)
3027             data = self.dumps(pb, proto, buffer_callback=[].append)
3037             data_pickled = self.dumps(1, proto, buffer_callback=None)
3057                 buffer_callback = lambda _: True  function
3058                 data = self.dumps(arr, proto, buffer_callback=buffer_callback)
3064                 buffer_callback = buffers.append
3065                 data = self.dumps(arr, proto, buffer_callback=buffer_callback)
3495                       buffer_callback=[].append)
3498             buffer_callback = buffers.append
3500                          buffer_callback=buffer_callback)