code: public GelfMessageBuilder recycle() {
  
          version = GelfMessage.GELF_VERSION;
          host = null;
          shortMessage = null;
          fullMessage = null;
          javaTimestamp = 0;
          level = null;
          facility = GelfMessage.DEFAULT_FACILITY;
          maximumMessageSize = GelfMessage.DEFAULT_MESSAGE_SIZE;
  
          additionalFields.clear();
          additionalFieldTypes.clear();
  
          return this;
      }
docs: Recycle this {@link GelfMessageBuilder} to a default state.
  
  @return {@code this} {@link GelfMessageBuilder}