-> negation of expr \texpr && expr  -> Short-circuit and \texpr
                  || expr  -> Short-circuit or \t( expr ) -> parens for grouping \tall()
                  or the empty selector -> matches all endpoints. \n Label names are
                  allowed to contain alphanumerics, -, _ and /. String literals are

            "x-kubernetes-list-type": "atomic"
          }
        },
        "type": "object"
      },
      "io.k8s.api.rbac.v1.ClusterRole": {
        "description": "ClusterRole is a cluster level, logical grouping of PolicyRules that can be referenced as a unit by a RoleBinding or ClusterRoleBinding.",
        "properties": {
          "aggregationRule": {
            "allOf": [
              {

	//
	// See RFC 7540, Section 5.3.4:
	//   Similarly, streams that are in the "idle" state can be assigned
	//   priority or become a parent of other streams. This allows for the
	//   creation of a grouping node in the dependency tree, which enables
	//   more flexible expressions of priority. Idle streams begin with a
	//   default priority (Section 5.3.5).
	MaxIdleNodesInTree int

- The metrics `etcd_request_duration_seconds` and `etcd_bookmark_counts` now differentiate by group resource instead of object type, allowing unique entries per `CustomResourceDefinition`, instead of grouping them all under `*unstructured.Unstructured`. ([#112042](https://github.com/kubernetes/kubernetes/pull/112042), [@ncdc](https://github.com/ncdc))

* Requests with the query parameter `?watch=` are treated by the API server as a request to watch, but authorization and metrics were not correctly identifying those as watch requests, instead grouping them as list calls. ([#48583](https://github.com/kubernetes/kubernetes/pull/48583), [@smarterclayton](https://github.com/smarterclayton))

Repetition  = "{" Expression "}" .
</pre>

<p>
Productions are expressions constructed from terms and the following
operators, in increasing precedence:
</p>
<pre class="grammar">
|   alternation
()  grouping
[]  option (0 or 1 times)
{}  repetition (0 to n times)
</pre>

<p>
Lowercase production names are used to identify lexical (terminal) tokens.
Non-terminals are in CamelCase. Lexical tokens are enclosed in