Needs to Access Kubernetes default ETCD

General Discussions
1

I am trying to create API-Extension-Server with Git Link . There used new ETCD for data management,

spec:
      serviceAccountName: apiserver
      containers:
      - name: wardle-server
        # build from staging/src/k8s.io/sample-apiserver/artifacts/simple-image/Dockerfile
        # or
        # docker pull registry.k8s.io/e2e-test-images/sample-apiserver:1.17.4
        # docker tag registry.k8s.io/e2e-test-images/sample-apiserver:1.17.4 kube-sample-apiserver:latest
        image: kube-sample-apiserver:latest
        imagePullPolicy: Never
        args: [ "--etcd-servers=http://localhost:2379" ]
      - name: etcd
        image: gcr.io/etcd-development/etcd:v3.5.7

but i want to access/use Kubernetes default ETCD for managing the data. Is this Possible?

If Yes. Kindly share the suggestion/reference.