040000 tree 9e7ef0da8971acf7dafeec69321750533bc14f69	best-practices
100644 blob fe3fc87b3c0d3b2227f73fa744aa5cee6009cc24	essentials_toc.cs
100644 blob ca5442aab725c6a5a1ba6e9201b102206749bf14	index.jd
100644 blob 696ef53a3621dbb7bfc211c430cb5b6c99cf20bc	optimizing-your-app.jd
040000 tree e33f7b2efbecdfeff639e94587f299b74a04f354	quality