message: Allow all `x-` extensions on the `xml` object
diff: }
  },
  "patternProperties": {
  - "^x-(?!ms-).*$": {
  - "$ref": "#/definitions/vendorExtension"
  - },
  - "^x-ms-sf-.*$": {
  + "^x-": {
  "$ref": "#/definitions/vendorExtension"
  }
  }
  