040000 tree af335053be4008a654d6f597c0e4060a1d29580d	core
040000 tree b9e0dcee347f784d4f7fd7f85d49bddb9311b993	event
040000 tree c8337a8f9ac845a6000153ce684d029a71ad570e	http
040000 tree 384e82eabb5c2a1961b9b5a90a6433a99dd8d3d5	os