Add type annotations for base_connection
Remove unnecessary functions in base_connection; properties can be overridden directly in the sub class
Related to #4261 (closed)
Migrated from D8065 (view on Phabricator)
Staging instance, all changes can be removed at any time
Remove unnecessary functions in base_connection; properties can be overridden directly in the sub class
Related to #4261 (closed)
Migrated from D8065 (view on Phabricator)