public SELF rampingUpIntervalMillis(long rampingUpIntervalMillis) {
        checkArgument(rampingUpIntervalMillis > 0,
                      "rampingUpIntervalMillis: %s (expected: > 0)", rampingUpIntervalMillis);
        this.rampingUpIntervalMillis = rampingUpIntervalMillis;
        return self();
    }
Sets the interval between weight updates during ramp up.
{@value DEFAULT_RAMPING_UP_INTERVAL_MILLIS} millis is used by default.
core/src/main/java/com/linecorp/armeria/common/loadbalancer/AbstractRampingUpLoadBalancerBuilder.java