import ( "k8s.io/apimachinery/pkg/runtime" "k8s.io/client-go/kubernetes/scheme" ) func main() { // Define custom type type MyResource struct { metadata metav1.ObjectMeta spec MyResourceSpec status MyResourceStatus } type MyResourceSpec struct { // ... } type MyResourceStatus struct { // ... } // Create new runtime scheme scheme := runtime.NewScheme() // Add custom types to Kubernetes scheme scheme.AddKnownTypes( // group version schema.GroupVersion{ Group: "example.com", Version: "v1alpha1", }, &MyResource{}, &MyResourceList{}, ) // Add the Kubernetes core types to the scheme meta_v1.AddToScheme(scheme) }In this example, we are defining a custom type `MyResource` and adding it to the Scheme using `AddKnownTypes`. We are also adding the `MyResourceList` type, which contains a list of `MyResource` objects. Overall, the `go k8s.io.client-go.pkg.runtime` package provides a way to extend the Kubernetes API with custom types, making it easier to work with Kubernetes objects in your Go programs.