code: protected void onValidMarkup(AppendingStringBuffer responseBuffer,
  			ValidationReport report) {
  		IRequestablePage responsePage = getResponsePage();
  		DocType doctype = getDocType(responseBuffer);
  
  		log.info("Markup for {} is valid {}",
  				responsePage != null ? responsePage.getClass().getName()
  						: "<unable to determine page class>", doctype.name());
  
  		String head = report.getHeadMarkup();
  		String body = report.getBodyMarkup();
  
  		int indexOfHeadClose = responseBuffer.lastIndexOf("</head>");
  		responseBuffer.insert(indexOfHeadClose, head);
  
  		int indexOfBodyClose = responseBuffer.lastIndexOf("</body>");
  		responseBuffer.insert(indexOfBodyClose, body);
  	}
docs: Called when the validated markup does not contain any errors.
  
  @param responseBuffer
  the validated response markup
  @param report
  the validation report