parameters: (self)
docstring: Close the database.
  
          Returns
          -------
          None
docstring_summary: Close the database.
docstring_tokens: Close the database .
function: def close(self):
          """Close the database.
  
          Returns
          -------
          None
  
          """
          self.env.close()
function_tokens: def close ( self ) : self . env . close ( )