public int getExistingReplicas(T pNode) {
        int replicas = 0;
        for (VirtualNode<T> vNode : ring.values()) {
            if (vNode.isVirtualNodeOf(pNode)) {
                replicas++;
            }
        }
        return replicas;
    }
with a specified key, route the nearest Node instance in the current hash ring
@param objectKey the object key to find a nearest Node
@return
core/src/main/java/thirdparty/com/github/jaskey/consistenthash/ConsistentHashRouter.java