@staticmethod
def consumer_work(cfg, data):
    """
        function specify how the consumer processses the data from producers.
        
        Args:
            cfg (easycore.common.config.CfgNode): config of this process, you can use it to get data from
                `consumer_init` function and transfer data to the next `consumer_work` and `consumer_end`
                function.
        """
    pass
