code: public static <T> Logger.Builder addObjectFormatter(Class<T> objectClass,
                                                        ObjectFormatter<? super T> objectFormatter) {
      return new Logger.Builder().addObjectFormatter(objectClass, objectFormatter);
    }
docs: Start to customize a {@link Logger} and add an object formatter for specific class of object.
  
  @param objectClass     the class of object
  @param objectFormatter the object formatter to add
  @param <T>             the type of object
  @return the {@link Logger.Builder} to build the {@link Logger}
  @since 1.1.0