code: def __subclasshook__(cls, subclass: Any) -> Union[bool, Any]:
      if cls is CanItemDataType:
          item = getattr(subclass, "item", None)
          return callable(item)
      return NotImplemented
  
imports: from typing import Dict, Union, Any
  from abc import ABC
  import functools
  from fastNLP.core.utils import apply_to_collection
  from fastNLP.core.callbacks import Callback
  from fastNLP.core.callbacks.utils import _get_monitor_value
  from fastNLP.core.log import logger
  from fastNLP.core.utils.utils import _check_valid_parameters_number
label_desc: Use image node_id 1 for calling the CanItemDataType obj's underlying member method code with example usage: obj.__subclasshook__(cls, subclass) and returns: NotImplemented, callable