code: def get_polling_override(self):
          
          polling_override = self.get_characteristic_handle_from_uuid(UUID_POLLING_OVERRIDE)
          if polling_override is None:
              logger.warn('Failed to find handle for polling override')
              return None
          override_ms = self.dongle._read_attribute(self.conn_handle, polling_override, True)
          return None if override_ms is None else ord(override_ms)
docs: Get the current polling override value in milliseconds. 
  
          See :meth:`set_polling_override` for more information. 
  
          Returns:
              None on error, otherwise the current override period in milliseconds 
              (0 = disabled).