def get_timeout(self, callback=None):
        """
        Get the visibility timeout for the queue.
        
        :rtype: int
        :return: The number of seconds as an integer.
        """
        def got_timeout(a):
            if callable(callback):
                callback(int(a['VisibilityTimeout']))
        self.get_attributes('VisibilityTimeout', callback=got_timeout)
Get the visibility timeout for the queue.
        
        :rtype: int
        :return: The number of seconds as an integer.