class_docstr: Base class for all Command like Superset Logic objects
docstr: Validate is normally called by run to validate data.
  Will raise exception if validation fails
  :raises: CommandException
code: def validate(self) -> None:
      """
      Validate is normally called by run to validate data.
      Will raise exception if validation fails
      :raises: CommandException
      """
  
file_path: superset/superset/commands/base.py
imports: from abc import ABC, abstractmethod
  from typing import Any, Optional
  from flask_appbuilder.security.sqla.models import User
  from superset.commands.utils import populate_owners
label_desc: Use image node_id 2 for calling the BaseCommand obj's underlying member method code with example usage: obj.validate() without return types