How to use the docco.parse function in docco

sources.forEach(function (source) {
      var sourceName = source.replace(/\.js$/, "");
      var dest = grunt.option("dest") + "/source/" + source + ".html";
      grunt.log.writeln("Rendering " + source.cyan + " to " + dest.cyan);
      var code = grunt.file.read("togetherjs/" + source);
      var sections = docco.parse(source, code, {languages:{}});
      doccoFormat(source, sections);
      sections.forEach(function (section, i) {
        section.index = i;
        section.empty = section.codeText.replace(/\s/gm, "") === "";
      });
      var first = marked.lexer(sections[0].docsText)[0];
      var hasTitle = first && first.type == 'heading' && first.depth == 1;
      var title = hasTitle ? first.text : path.basename(source, ".js");
      var tmpl = env.getTemplate("source-code.tmpl");
      var tmplVars = Object.create(vars);
      tmplVars.title = title;
      tmplVars.sections = sections;
      tmplVars.source = source;
      tmplVars.sourceName = sourceName;
      tmplVars.sourceDescription = marked(sourceDescriptions[sourceName] || "", {smartypants: true});
      tmplVars.base = "../";