code: def _publish(self, obj):
          '''
          Publish the OC object.
          '''
          bin_obj = umsgpack.packb(obj)
          self.pub.send(bin_objf _publish(self, obj):
          '''
          Publish the OC object.
          '''
          bin_obj = umsgpack.packb(obj)
          self.pub.send(bin_obj)
docs: Publish the OC object.