code: public String render(String template, Object... args) {
          try {
              ITemplate t = getTemplate(template, args);
              return t.render();
          } finally {
              renderCleanUp();
          }
      }
docs: Render template by string parameter and an array of
  template args. The string parameter could be either
  a path point to the template source file, or the inline
  template source content. The render result is returned
  as a String
  <p/>
  <p>See {@link #getTemplate(java.io.File, Object...)} for note on
  render args</p>
  
  @param template either the path of template source file or inline template content
  @param args     render args array
  @return render result