message: updating protected Entity class with new UnprotectedDisk field
diff: "items": {
  "$ref": "#/definitions/A2AProtectedDiskDetails"
  }
  + },
  + "unprotectedDisks": {
  + "description": "The list of unprotected disks.",
  + "type": "array",
  + "items": {
  + "$ref": "#/definitions/A2AUnprotectedDiskDetails"
  + }
  },
  "protectedManagedDisks": {
  "description": "The list of protected managed disks.",
  }
  },
  "x-ms-discriminator-value": "A2A"
  + },
  + "A2AUnprotectedDiskDetails": {
  + "description": "A2A unprotected disk details.",
  + "type": "object",
  + "properties": {
  + "diskLunId": {
  + "format": "int32",
  + "description": "The source lun Id for the data disk.",
  + "type": "integer"
  + }
  + }
  },
  "A2AUpdateContainerMappingInput": {
  "description": "A2A update protection container mapping.",
  