}
        return root;
      }
    },
    RANDOM {
      /**
       * Generates a tree with topology selected uniformly at random from the topologies of binary
       * trees of the specified size.
       */
      @Override
      Optional<BinaryNode> createTree(int size, Random rng) {
        int[] keys = new int[size];
        for (int i = 0; i < size; i++) {

        }
        return root;
      }
    },
    RANDOM {
      /**
       * Generates a tree with topology selected uniformly at random from the topologies of binary
       * trees of the specified size.
       */
      @Override
      Optional<BinaryNode> createTree(int size, Random rng) {
        int[] keys = new int[size];
        for (int i = 0; i < size; i++) {

- Adds alpha feature `VolumeCapacityPriority` which makes the scheduler prioritize nodes based on the best matching size of statically provisioned PVs across multiple topologies. ([#96347](https://github.com/kubernetes/kubernetes/pull/96347), [@cofyc](https://github.com/cofyc)) [SIG Apps, Network, Scheduling, Storage and Testing]

ty allow you to specify rules for restricting which node(s) a pod can schedule onto, based on the labels on the node. Pod affinity/anti-affinity allow you to specify rules for spreading and packing pods relative to one another, across arbitrary topologies (node, zone, etc.) These affinity rules are now be specified in a new-in-1.6 `affinity` field of the PodSpec. Kubernetes 1.6 continues to support the alpha `scheduler.alpha.kubernetes.io/affinity` annotation on the Pod if you explicitly enable the...

* Added StorageClass API to restrict topologies of dynamically provisioned volumes. ([#63233](https://github.com/kubernetes/kubernetes/pull/63233), [@lichuqiang](https://github.com/lichuqiang))