group, version = parts[0], parts[1]
		if len(group) == 0 {
			errs = append(errs, "group part: "+utilvalidation.EmptyError())
		} else if msgs := utilvalidation.IsDNS1123Subdomain(group); len(msgs) != 0 {
			errs = append(errs, prefixEach(msgs, "group part: ")...)
		}
	default:
		return append(errs, "an apiVersion is "+utilvalidation.RegexError(dns1035LabelErrMsg, dns1035LabelFmt, "my-name", "abc-123")+

import (
	"context"
	"fmt"
	"strings"

	batchv1beta1 "k8s.io/api/batch/v1beta1"
	apiequality "k8s.io/apimachinery/pkg/api/equality"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	utilvalidation "k8s.io/apimachinery/pkg/util/validation"
	"k8s.io/apimachinery/pkg/util/validation/field"
	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
	"k8s.io/apiserver/pkg/registry/rest"