code: def _check_workspace(cls, workspace: str):
      if not workspace:
          raise ValueError("Missing workspace")
  
file_path: argilla/src/argilla/server/daos/models/datasets.py
imports: from datetime import datetime
  from typing import Any, Dict, Optional, TypeVar, Union
  from argilla.server.commons.models import TaskType
  from argilla.server.constants import ES_INDEX_REGEX_PATTERN
  from argilla.server.pydantic_v1 import BaseModel, Field, root_validator
label_desc: Use image node_id 2 for calling the BaseDatasetDB obj's underlying member method code with example usage: obj._check_workspace(cls, workspace) without return types