Does anyone have a good a good example of using a postrenderer with a helm release in pulumi? Currently working to migrate our helm release deployment from kustomize to Pulumi and our postrenderer looks like this

apiVersion: <http://helm.toolkit.fluxcd.io/v2beta1|helm.toolkit.fluxcd.io/v2beta1>
kind: HelmRelease
metadata:
    name: example
    namespace: exampleNS
spec:
    postRenderers:
        - kustomize:
            patchesStrategicMerge:
                - apiVersion: v1
                  kind: Secret
                  metadata:
                    name: example-regsecret
                  data:
                    .dockerconfigjson:

I was trying to make something like this work in Pulumi but have not had any luck so far