code: @Override
      public Message newMessage(final String message, final Object... params) {
          return new MessageFormatMessage(message, params);
      }
docs: Creates {@link org.apache.logging.log4j.message.StringFormattedMessage} instances.
  @param message The message pattern.
  @param params Parameters to the message.
  @return The Message.
  
  @see org.apache.logging.log4j.message.MessageFactory#newMessage(String, Object...)