code: public void addBottom(Content body) {
          Content bottom = new RawHtml(replaceDocRootDir(configuration.bottom));
          Content small = HtmlTree.SMALL(bottom);
          Content p = HtmlTree.P(HtmlStyle.legalCopy, small);
          body.addContent(p);
      }
docs: Adds the user specified bottom.
  
  @param body the content tree to which user specified bottom will be added