code: def datetime_to_isoformat(cls, v: Optional[datetime]):
      if v is not None:
          return v.isoformat()
  
imports: import socket
  from datetime import datetime
  from enum import Enum
  from typing import TYPE_CHECKING, Any, Dict, Generic, List, MutableMapping, Optional, TypeVar, Union
  from uuid import uuid4
  from argilla.client.models import Vectors
  from argilla.pydantic_v1 import BaseModel, Field, validator
  from argilla.pydantic_v1.generics import GenericModel
label_desc: Use image node_id 1 for calling the BaseRecord obj's underlying member method code with example usage: obj.datetime_to_isoformat(cls, v) and returns: v