code: def extended_fields(self) -> Dict[str, Any]:
      words = self.all_text()
      return {
          **super().extended_fields(),
          "text": words,
      }
  
imports: from datetime import datetime
  from typing import Any, ClassVar, Dict, List, Optional, Union
  from argilla.server.commons.models import PredictionStatus, TaskStatus, TaskType
  from argilla.server.constants import DEFAULT_MAX_KEYWORD_LENGTH
  from argilla.server.helpers import flatten_dict
  from argilla.server.pydantic_v1 import BaseModel, Field, root_validator, validator
  from argilla.server.services.datasets import ServiceBaseDataset
  from argilla.server.services.search.model import ServiceBaseRecordsQuery, ServiceScoreRange
  from argilla.server.services.tasks.commons import ServiceBaseAnnotation, ServiceBaseRecord
label_desc: Use image node_id 14 for calling the ServiceTextClassificationRecord obj's underlying member method code with example usage: obj.extended_fields() and returns: dict