Change:
apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation" metav1validation "k8s.io/apimachinery/pkg/apis/meta/v1/validation" "k8s.io/apimachinery/pkg/util/sets" <del> "k8s.io/apimachinery/pkg/util/validation" </del> "k8s.io/apimachinery/pkg/util/validation/field" api "k8s.io/kubernetes/pkg/apis/core" "k8s.io/kubernetes/pkg/apis/core/helper"

Discussion:
After got merged, we have new helper function here: It will be good for us to use this simpler helper function to replace previous function. /good-first-issue
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/sig usability
I would like to take this one /assign
I worked in on this as well, but kept your changed files untouched (as written in my PR description). same for you. I hope this is OK for you.
This should be reopened until and got merged (my PR excluded the changes from the other PRs).
/reopen per last comment
Reopened this issue. <detailsIn response to : This should be reopened until and got merged (my PR excluded the changes from the other PRs). per last comment Instructions for interacting with me using PR comments are available . If you have questions or suggestions related to my behavior, please file an issue against the repository. </details
The Kubernetes project currently lacks enough contributors to adequately respond to all issues and PRs. This bot triages issues and PRs according to the following rules: After 90d of inactivity, is applied After 30d of inactivity since was applied, is applied After 30d of inactivity since was applied, the issue is closed You can: Mark this issue or PR as fresh with Mark this issue or PR as rotten with Close this issue or PR with Offer to help out with [Issue Triage][1] Please send feedback to sig-contributor-experience at . /lifecycle stale [1]:
can you assign me
/assign
/assign
I'd love to work on this issue.

/assign
Hi, , I am a first commitor for kubernetes and I have committed a PR in , could you help me to review it, or give me some suggestions. Thanks a lot.
The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs. This bot triages issues and PRs according to the following rules: After 90d of inactivity, is applied After 30d of inactivity since was applied, is applied After 30d of inactivity since was applied, the issue is closed You can: Mark this issue or PR as fresh with Close this issue or PR with Offer to help out with [Issue Triage][1] Please send feedback to sig-contributor-experience at . /lifecycle rotten [1]:
The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs. This bot triages issues and PRs according to the following rules: After 90d of inactivity, is applied After 30d of inactivity since was applied, is applied After 30d of inactivity since was applied, the issue is closed You can: Reopen this issue or PR with Mark this issue or PR as fresh with Offer to help out with [Issue Triage][1] Please send feedback to sig-contributor-experience at . /close [1]:
Closing this issue. <detailsIn response to : The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs. After 90d of inactivity, is applied After 30d of inactivity since was applied, is applied After 30d of inactivity since was applied, the issue is closedReopen this issue or PR with Mark this issue or PR as fresh with Offer to help out with [Issue Triage][1] Instructions for interacting with me using PR comments are available . If you have questions or suggestions related to my behavior, please file an issue against the repository. </details