code: def _log_best_step(self):
      logger.info(
          "Best model found at step {}".format(self.current_step_best)
      )
  
imports: from enum import Enum
  from onmt.utils.logging import logger
label_desc: Use image node_id 6 for calling the EarlyStopping obj's underlying member method code with example usage: obj._log_best_step() without return types