Parsing Chart.yaml ? about chart-doc-gen

[chgl]

Some fields in doc.yaml don't have a correspondence in Chart.yaml, e.g. doc.yaml's repository.url/name. But I think the Chart.yaml's annotations could be used for this, something like:

apiVersion: v2
name: test
description: A Helm chart for deploying the test app on Kubernetes.
type: application
version: 1.0.0
annotations:
  chart-doc-gen.appscode.com/repository-url: https://charts.appscode.com/stable/
  chart-doc-gen.appscode.com/repository-name: appscode
  # ...
  # or even:
  chart-doc-gen.appscode.com/doc.yaml: |
    project:
      name: Stash by AppsCode
      shortName: Stash
      url: https://github.com/stashed/stash
      description: Backup your Kubernetes Volumes
      app: a Stash operator
    repository:
      url: https://charts.appscode.com/stable/
      name: appscode
    chart:
      name: stash
      version: v0.9.0-rc.0
      values: "-- generate from values file --"
      valuesExample: "-- generate from values file --"
    prerequisites:
    - "Kubernetes v1.14+"
    - "`--allow-privileged` flag must be set to true for both the API server and the kubelet"
    - "(If you use Docker) The Docker daemon of the cluster nodes must allow shared mounts"
    - "Pre-installed HashiCorp Vault server."
    release:
      name: stash-operator
      namespace: kube-system

With some reasonable defaults if the annotations aren't used?