code: def validate(self) -> None:
      pass
  
file_path: superset/superset/commands/dashboard/permalink/get.py
imports: import logging
  from typing import Optional
  from sqlalchemy.exc import SQLAlchemyError
  from superset.commands.dashboard.exceptions import DashboardNotFoundError
  from superset.commands.dashboard.permalink.base import BaseDashboardPermalinkCommand
  from superset.commands.key_value.get import GetKeyValueCommand
  from superset.daos.dashboard import DashboardDAO
  from superset.dashboards.permalink.exceptions import DashboardPermalinkGetFailedError
  from superset.dashboards.permalink.types import DashboardPermalinkValue
  from superset.key_value.exceptions import KeyValueCodecDecodeException, KeyValueGetFailedError, KeyValueParseKeyError
  from superset.key_value.utils import decode_permalink_id
label_desc: Use image node_id 3 for calling the GetDashboardPermalinkCommand obj's underlying member method code with example usage: obj.validate() without return types