040000 tree 049a4d63c8e250dd8ce0f7458c49dad39f52831e	get-started
040000 tree 3ad22ed3ad3e32b84781f06a686afd89142950b2	material
040000 tree 9b40c4e524a3b2ac3132d6617d13fb07062b202c	patterns
040000 tree 232390710ce278c165bd8fbdbe5b2ee4e0a1f33f	style