class_docstr: Empty Parent class so traitlets work on DB.
code: def close(self):
      pass
  
imports: import copy
  from copy import deepcopy
  from datetime import datetime
  from traitlets import Dict, Float, Integer, Unicode
  from traitlets.config.configurable import LoggingConfigurable
  from ..util import ensure_timezone
label_desc: Use image node_id 1 for calling the BaseDB obj's underlying member method code with example usage: obj.close() without return types