code: function stringify(tokens, renderer, suppress) {
    renderer = renderer || new Renderer;
    var options = {renderer: renderer};
    // do not mangle links for these renderer types
    if(renderer instanceof TextRenderer) {
      options.mangle = false;
    }
    var parser = new Parser(options);
    var md =  parser.parse(tokens);
    if(!suppress) {
      for(var z in tokens.links) {
        md += ref(z, tokens.links[z].href) + EOL;
      }
    }
    return md;
  }
docs: @func stringify(tokens, [modifiers])
  
  @api private
  
  Converts the lexer tokens back to a markdown string.
  
  @param tokens The lexer tokens.
  @param renderer The renderer instance to use.