code: public Content getTableCaption(Content title) {
          Content captionSpan = HtmlTree.SPAN(title);
          Content space = Contents.SPACE;
          Content tabSpan = HtmlTree.SPAN(HtmlStyle.tabEnd, space);
          Content caption = HtmlTree.CAPTION(captionSpan);
          caption.addContent(tabSpan);
          return caption;
      }
docs: Get table caption.
  
  @param rawText the caption for the table which could be raw Html
  @return a content tree for the caption