code: def close(self):
      try:
          self._commit()
      finally:
          self._index = (
              self._datfile
          ) = self._dirfile = self._bakfile = None
  
imports: import ast
  import io
  import os
  import collections.abc
label_desc: Use image node_id 17 for calling the _Database obj's underlying member method code with example usage: obj.close() without return types