code: public static Builder newBuilder(ImageId imageId, ImageConfiguration configuration) {
      return new BuilderImpl().setImageId(imageId).setConfiguration(configuration);
    }
docs: Returns a builder for an {@code ImageInfo} object given the image identity and an image
  configuration. Use {@link DiskImageConfiguration} to create an image from an existing disk. Use
  {@link StorageImageConfiguration} to create an image from a file stored in Google Cloud
  Storage.