code: def _get_strategy_cache_key(self, sensor_name):
          
          # try for a direct match first, otherwise do full comparison
          if sensor_name in self._strategy_cache:
              return sensor_name
          else:
              escaped_name = resource.escape_name(sensor_name)
              for key in self._strategy_cache:
                  escaped_key = resource.escape_name(key)
                  if escaped_key == escaped_name:
                      return key
          # no match
          return sensor_name
docs: Lookup sensor name in cache, allowing names in escaped form
  
          The strategy cache uses the normal KATCP sensor names as the keys.
          In order to allow access using an escaped sensor name, this method
          tries to find the normal form of the name.
  
          Returns
          -------
  
          key : str
              If there is a match, the cache key is returned.
              If no match, then the sensor_name is returned unchanged.