parameters: (self)
docstring: Flush and close the mailbox.
docstring_summary: Flush and close the mailbox.
docstring_tokens: Flush and close the mailbox .
function: def close(self):
          """Flush and close the mailbox."""
          raise NotImplementedError('Method must be implemented by subclass')
function_tokens: def close ( self ) : raise NotImplementedError ( 'Method must be implemented by subclass' )