code: protected void reportErrors()
              throws JspException
      {
          assert(_eh != null);
          String err = _eh.getErrorsReport(getTagName());
          IErrorCollector ec = (IErrorCollector) SimpleTagSupport.findAncestorWithClass(this, IErrorCollector.class);
          if (ec != null) {
              ec.collectChildError(err);
          }
          else {
              write(err);
          }
      }
docs: This method will write out the <code>String</code> returned by <code>getErrorsReport</code> to the
  response output stream.
  @throws JspException if <code>write</code> throws an exception.
  @see #write