def log(self, *args):
        '''
        get/set the internal pipeline log message object.

        Caller can further manipulate the log object with object-specific
        calls.
        '''
        if len(args):
            self._log = args[0]
        else:
            return self._log
def log ( self , * args ) : if len ( args ) : self . _log = args [ 0 ] else : return self . _log
get/set the internal pipeline log message object.

        Caller can further manipulate the log object with object-specific
        calls.