boolean isBackingOff(long timeMs) {
            if (state != State.BACKING_OFF) {
                return false;
            } else {
                return !isBackoffComplete(timeMs);
            }
        }
Updates the manager when a request is sent.

@param node the destination of the request
@param correlationId the correlation id of the request
@param timeMs the current time
raft/src/main/java/org/apache/kafka/raft/RequestManager.java