"format": "time_series",
          "hide": true,
          "intervalFactor": 2,
          "legendFormat": "heap alloc",
          "refId": "D"
        },
        {
          "datasource": {
            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "go_memstats_alloc_bytes{app=\"istiod\"}",

               "legendFormat": "Container ({{pod}})"
            },
            {
               "datasource": {
                  "type": "prometheus",
                  "uid": "$datasource"
               },
               "expr": "sum by (pod) (go_memstats_stack_inuse_bytes{app=\"istiod\"})",
               "legendFormat": "Stack ({{pod}})"

// See the License for the specific language governing permissions and
// limitations under the License.

package multixds

// multixds knows how to target either central Istiod or all the Istiod pods on a cluster.

import (
	"context"
	"encoding/json"
	"errors"
	"fmt"
	"io"
	"net"
	"net/url"
	"os"
	"strings"

		Example: `  # Open ControlZ web UI for the istiod-123-456.istio-system pod
  istioctl dashboard controlz istiod-123-456.istio-system

  # Open ControlZ web UI for the istiod-56dd66799-jfdvs pod in a custom namespace
  istioctl dashboard controlz istiod-123-456 -n custom-ns

  # Open ControlZ web UI for any Istiod pod
  istioctl dashboard controlz deployment/istiod.istio-system

  # with short syntax

	for _, resp := range istiodResponses {
		istiodDump := &configdump.Wrapper{}
		err := json.Unmarshal(resp, istiodDump)
		if err != nil {
			continue
		}
		c.istiod = istiodDump
		break
	}
	if c.istiod == nil {
		return nil, fmt.Errorf("unable to find config dump in Istiod responses")
	}
	envoyDump := &configdump.Wrapper{}
	err := json.Unmarshal(envoyResponse, envoyDump)
	if err != nil {
		return nil, err
	}

      ],
      "protocol": "TCP",
      "uid": "Kubernetes//Pod/istio-system/istiod-test-6bdfb786d-s58pj",
      "name": "istiod-test-6bdfb786d-s58pj",
      "namespace": "istio-system",
      "trustDomain": "cluster.local",
      "serviceAccount": "istiod-test",
      "workloadName": "istiod-test",
      "workloadType": "deployment",
      "canonicalName": "istiod",
      "canonicalRevision": "latest",
      "network": "network2",

	}
	istiodClusterDump, err := c.istiod.GetDynamicClusterDump(true)
	if err != nil {
		istiodBytes.WriteString(err.Error())
	} else {
		istiod, err := protomarshal.ToJSONWithAnyResolver(istiodClusterDump, "    ", &envoyResolver)
		if err != nil {
			return err
		}
		istiodBytes.WriteString(istiod)
	}
	diff := difflib.UnifiedDiff{
		FromFile: "Istiod Clusters",

	}
	istiodListenerDump, err := c.istiod.GetDynamicListenerDump(true)
	if err != nil {
		istiodBytes.WriteString(err.Error())
	} else {
		istiod, err := protomarshal.ToJSONWithAnyResolver(istiodListenerDump, "    ", &envoyResolver)
		if err != nil {
			return err
		}
		istiodBytes.WriteString(istiod)
	}
	diff := difflib.UnifiedDiff{
		FromFile: "Istiod Listeners",

			noIstiod:       true,
			expectedOutput: "Error: no running Istio pods in \"istio-system\"\n",
			wantException:  true,
		},
		{ // case 1, with Istiod instance
			args:           []string{},
			expectedString: "NAME     CLUSTER     CDS     LDS     EDS     RDS     ECDS     ISTIOD",
		},
		{ // case 2: supplying nonexistent pod name should result in error with flag
			args:          strings.Split("deployment/random-gibberish", " "),

			expectedOutput: "Error: debug type is required\n",
			wantException:  true,
		},
		{ // case 1, no istiod
			args:           []string{"adsz"},
			noIstiod:       true,
			expectedOutput: "Error: no running Istio pods in \"istio-system\"\n",
			wantException:  true,
		},
		{ // case 2, with Istiod instance
			args:           []string{"adsz"},
			expectedString: "",
		},
	}