code: def on_train_end(self, logs: Optional[Dict]) -> None:
      print(f"{train_end}:{logs}", file=self.log)
  
      lines = self.log.getvalue().splitlines()
  
      try:
          for check in all_checks:
              check(
                  lines,
                  epochs=self.epochs,
                  validations=self.validations,
              )
      except AssertionError:
          for i, line in enumerate(lines):
              print(f"{i}:\t{line}")
          raise
  
imports: import io
  from typing import Any, Callable, Dict, List, Optional, Set
  import determined
  import determined.keras
label_desc: Use image node_id 3 for calling the CBChecker obj's underlying member method code with example usage: obj.on_train_end(logs) without return types