class_docstr: Command that exports all databases, datasets, charts, dashboards and saved queries.
code: def validate(self) -> None:
      pass
  
file_path: superset/superset/commands/export/assets.py
imports: from collections.abc import Iterator
  from datetime import datetime, timezone
  import yaml
  from superset.commands.base import BaseCommand
  from superset.commands.chart.export import ExportChartsCommand
  from superset.commands.dashboard.export import ExportDashboardsCommand
  from superset.commands.database.export import ExportDatabasesCommand
  from superset.commands.dataset.export import ExportDatasetsCommand
  from superset.commands.query.export import ExportSavedQueriesCommand
  from superset.utils.dict_import_export import EXPORT_VERSION
label_desc: Use image node_id 2 for calling the ExportAssetsCommand obj's underlying member method code with example usage: obj.validate() without return types