code: @CheckReturnValue
      public MessageAction reset()
      {
          return content(null).nonce(null).embed(null).tts(false).override(false).clearFiles();
      }
docs: Resets this MessageAction to empty state
  <br>{@link #isEmpty()} will result in {@code true} after this has been performed!
  
  <p>Convenience over using
  {@code content(null).nonce(null).embed(null).tts(false).override(false).clearFiles()}
  
  @return Updated MessageAction for chaining convenience