use pause/resume to implement queues with priority

[whateverwhocares]

Maybe it doesn't work as I don't see any packages implement priority queues based on kafka, and even no much pages talking about this (sure I didn't pay too much time on searching...). But why don't add this support via the pause/resume api on ConsumerGroup? Say there are two topics A and B, if there is msg from topic B, then A will be paused so that the consumerGroup will focus all the cpu on handling of topic A, after the msg from B are processed, then B can be resumed; I did some simple demo, looks it works, but not sure why it's not added to Sarama or any other package? Anyone knows why?