json_schema: {
      "description": "version specific attributes of a stack",
      "properties": {
          "createTimestamp": {
              "id": "createTimestamp",
              "type": "string"
          },
          "projectIteration": {
              "id": "projectIteration",
              "type": "integer"
          },
          "projectStep": {
              "id": "projectStep",
              "type": "integer"
          },
          "snapshotRootPath": {
              "id": "snapshotRootPath",
              "type": "string"
          },
          "stackResolutionX": {
              "id": "stackResolutionX",
              "type": "number"
          },
          "stackResolutionY": {
              "id": "stackResolutionY",
              "type": "number"
          },
          "stackResolutionZ": {
              "id": "stackResolutionZ",
              "type": "number"
          },
          "versionNotes": {
              "id": "versionNotes",
              "type": "string"
          }
      },
      "required": [],
      "title": "Stack Version",
      "type": "object"
  }