docs: private BoxFile.Info getFile(BoxJSONResponse response) {
          JsonObject jsonObject = JsonObject.readFrom(response.getJSON());
  
          JsonArray array = (JsonArray) jsonObject.get("entries");
          JsonObject fileObj = (JsonObject) array.get(0);
  
          BoxFile file = new BoxFile(this.getAPI(), fileObj.get("id").asString());
  
          return file.new Info(fileObj);
      }