040000 tree 646f242b8c164a6a0be8817d6f8ef960eff6c90d	deployment
040000 tree da72b62ce306effb19aefd2f03006ab5e8f321f7	developers
040000 tree ce9a99094413bd4fbf25bbcb44af239cbe5cc095	interoperation
040000 tree 7d859a394e1f4dcdc8188f68f151f1616ec9be6f	system-architecture