Metadata manifest attribute not supported

The cloud foundry app manifest supports a metadata attribute for setting labels and annotations: https://docs.cloudfoundry.org/devguide/deploy-apps/manifest-attributes.html#metadata

However, this attribute seems to be ignored by the cf-java-client.

How to reproduce

Here is a minimal example that reproduces the issue:

ManifestV3 manifest = ApplicationManifestUtilsV3.read(Path.of("test-manifest-with-labels.yaml"));
ApplicationManifestUtilsV3.write(Path.of("test-manifest-result.yaml"), manifest);

Content of test-manifest-with-labels.yaml:

---
applications:
- name: test-app
  memory: 1G
  instances: 1
  metadata:
    labels:
      test-label: "test-value"

Content of test-manifest-result.yaml after the snippet above has run:

---
applications:
- name: test-app
  memory: 1G
  instances: 1

As you can see, the metadata information has been removed. When using the cf-java-client to deploy such a manifest, the metadata labels and annotations are therefore discarded. I would expect the attributes mentioned in the cloud foundry documentation to be supported by this client library, including the metadata attribute.

Beginne bei ApplicationManifestUtilsV3.read und write und verwende das bereitgestellte Manifest und die Ausgabe als Reproduktion. Verfolge, wie Metadaten während dieses Roundtrips dargestellt werden, erhalte die im Issue beschriebenen Labels und Annotationen und überprüfe, dass das resultierende Manifest sie beibehält.