// +optional
  optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;

  // Items is the list of ConfigMaps.
  repeated ConfigMap items = 2;
}

// ConfigMapNodeConfigSource contains the information to reference a ConfigMap as a config source for the Node.

@app.get("/items/")
def read_items(user: CurrentUser):
    ...


@app.post("/items/")
def create_item(user: CurrentUser, item: Item):
    ...


@app.get("/items/{item_id}")
def read_item(user: CurrentUser, item_id: int):
    ...


@app.delete("/items/{item_id}")
def delete_item(user: CurrentUser, item_id: int):
    ...
```

  - A `create` or `update` API request with duplicate items in a keyed list no longer wipes out managedFields. Examples include env var entries with the same name, or port entries with the same containerPort in a pod spec.

* This PR removes the following metrics: ([#74636](https://github.com/kubernetes/kubernetes/pull/74636), [@logicalhan](https://github.com/logicalhan))
    *   reflector_items_per_list
    *   reflector_items_per_watch
    *   reflector_last_resource_version
    *   reflector_list_duration_seconds
    *   reflector_lists_total
    *   reflector_short_watches_total
    *   reflector_watch_duration_seconds

- CustomResourceDefinition schemas that use `x-kubernetes-list-map-keys` to specify properties that uniquely identify list items must make those properties required or have a default value, to ensure those properties are present for all list items. See https://kubernetes.io/docs/reference/using-api/api-concepts/#merge-strategy for details. ([#88076](https://github.com/kubernetes/kubernetes/pull/88076), [@eloyekunle](https://github.com/eloyekunle))...

    /** The key of the configuration. e.g.  */
    String PLUGIN_VERSION_FILTER = "plugin.version.filter";

    /** The key of the configuration. e.g. 1000 */
    String STORAGE_MAX_ITEMS_IN_PAGE = "storage.max.items.in.page";

    /** The key of the configuration. e.g. admin */
    String PASSWORD_INVALID_ADMIN_PASSWORDS = "password.invalid.admin.passwords";

    /**

    * remainingItemCount is the number of subsequent items in the list which are not included in this list response. If the list request contained label or field selectors, then the number of remaining items is unknown and the field will be left unset and omitted during serialization. If the list is complete (either because it is not chunking or because this is the last chunk), then there are no more remaining items and this field will be left unset and omitted during serialization....

* This PR removes the following metrics: ([#74636](https://github.com/kubernetes/kubernetes/pull/74636), [@logicalhan](https://github.com/logicalhan))
    *   reflector_items_per_list
    *   reflector_items_per_watch
    *   reflector_last_resource_version
    *   reflector_list_duration_seconds
    *   reflector_lists_total
    *   reflector_short_watches_total
    *   reflector_watch_duration_seconds

  - `proxy` plugin replaced by `forward` plugin

## Removed and deprecated metrics

### Removed metrics

- `reflector_items_per_list`
- `reflector_items_per_watch`
- `reflector_last_resource_version`
- `reflector_list_duration_seconds`
- `reflector_lists_total`
- `reflector_short_watches_total`
- `reflector_watch_duration_seconds`

* **[beta]** Added support for mount options in persistent volumes.
* **[alpha]** All in one volume proposal - a new volume driver capable of projecting secrets, configmaps, and downward API items into the same directory.

## Deprecations
* Remove extensions/v1beta1 Jobs resource, and job/v1beta1 generator. ([#38614](https://github.com/kubernetes/kubernetes/pull/38614), [@soltysh](https://github.com/soltysh))