Overhead structure represents the resource overhead associated with running a pod.

RuntimeClass defines a class of container runtime supported in the cluster. The RuntimeClass is used to determine which container runtime is used to run all containers in a pod. RuntimeClasses are manually defined by a user or cluster provisioner, and referenced in the PodSpec. The Kubelet is responsible for resolving the RuntimeClassName reference before running the pod. For more details, see https://kubernetes.io/docs/concepts/containers/runtime-class/

RuntimeClassList is a list of RuntimeClass objects.

Scheduling specifies the scheduling constraints for nodes supporting a RuntimeClass.