@Override
  public void apply(Swagger swagger) {
    swagger.setVendorExtension("x-generated-at", Instant.now().toString());
  }
Add a timestamp to a Swagger spec as an 'x-generated-at' extended property.

<p>TODO Move everything in com.amazonaws.blox.swagger to a separate project
buildSrc/src/main/java/com/amazonaws/blox/swagger/GenerationTimestampFilter.java