Remove and return the last ``size`` item of the list ``name``

        Like **Redis.RPOP**

        :param string name: the queue name
        :param int size: the length of result
        :return: the list of pop elements
        :rtype: list

def qpop_back(self, name, size=1):
        """
        Remove and return the last ``size`` item of the list ``name``

        Like **Redis.RPOP**

        :param string name: the queue name
        :param int size: the length of result
        :return: the list of pop elements
        :rtype: list
        
        """
        size = get_positive_integer("size", size)
        return self.execute_command('qpop_back', name, size)