// delete) or an object that cannot have labels (like a
  // DeploymentRollback or a PodProxyOptions object) is not considered to
  // match.
  // Use the object selector only if the webhook is opt-in, because end
  // users may skip the admission webhook by setting the labels.
  // Default to the empty LabelSelector, which matches everything.
  // +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.LabelSelector objectSelector = 2;

a [schema](../operator/pkg/apis/istio/v1alpha1/values_types.proto).
1. [Controller](#k8s-controller) code. The code comprises the K8s listener, webhook and logic for reconciling the cluster
to an `IstioOperatorSpec` CR.
1. [Manifest creation](#manifest-creation) code. User settings are overlaid on top of the