public void setInRotation(Boolean inRotation) {
        synchronized (mutex) {
            rotationOverride = inRotation;
            updateCurrentlyInRotation();
        }
    }
Explicitly set this container in or out of rotation

@param inRotation true to set this in rotation regardless of any clusters and of the default value,
                  false to set it out, and null to make this decision using the usual cluster-dependent logic
container-core/src/main/java/com/yahoo/container/handler/VipStatus.java