items:
                      type: string
                    type: array
                  priority:
                    description: Priority priority given for ip pool while ip allocation
                      on a service.
                    type: integer
                  serviceSelectors:
                    description: ServiceSelectors list of label selector to select

  optional string group = 8;

  // version is the preferred version of the resource.  Empty implies the version of the containing resource list
  // For subresources, this may have a different value, for example: v1 (while inside a v1beta1 version of the core resource's group)".
  optional string version = 9;

  // kind is the kind for the resource (e.g. 'Foo' is the kind for a resource 'foo')
  optional string kind = 3;

                "type": "prometheus",
                "uid": "${datasource}"
              },
              "expr": "sum(rate(pilot_xds_write_timeout{app=\"istiod\"}[1m]))",
              "format": "time_series",
              "intervalFactor": 1,
              "legendFormat": "Write Timeouts",
              "refId": "F"
            },
            {
              "datasource": {
                "type": "prometheus",