Get namespace PVC usage (Byte)

const response = await fetch('/v1/monitoring-ns/metric/volume/result/current?clusterIds=text', {
    method: 'GET',
    headers: {},
});
const data = await response.json();

[
  {
    "metrics": {
      "cluster": "thingcluster",
      "measure": "total",
      "pv_name": "pvc-25d59719-c9d4-48ac-a87a-be5adca980a2",
      "pvc_name": "data-cocktail-monitoring-monitoring-db-0",
      "pvc_namespace": "cocktail-system",
      "storage_class": "nfs-csi",
      "volume_type": "text"
    },
    "timestamp": 1687934760,
    "value": 1099511627776
  }
]