code: public Content setImages(Map<String, Map<String, String>> images) {
          this.images = images;
          return this;
      }
docs: /*
  A map of image names to { “url” : <url> } image maps.
  Use the name “full” to denote the full-sized image, and “thumb” to denote
  the thumbnail-sized image. Other image names are not reserved.
  Or use setFullImage and setThumbImage to set them separately.