#NEWLINE# def gmtime_adj_notAfter( self , amount ) : #NEWLINE# #INDENT# '\n        Adjust the time stamp for when the certificate stops being valid\n\n        :param amount: The number of seconds by which to adjust the ending\n                       validity time.\n        :type amount: :py:class:`int`\n\n        :return: None\n        ' #NEWLINE# if ( not isinstance ( amount , int ) ) : #NEWLINE# #INDENT# raise TypeError ( 'amount must be an integer' ) #NEWLINE# #UNINDENT# notAfter = _lib . X509_get_notAfter ( self . _x509 ) #NEWLINE# _lib . X509_gmtime_adj ( self , amount )