040000 tree 0a66177eefc46fbfeb34176e0e7c631aa74698c9	core
040000 tree 7895064b2890b090f681a8ec9c4251b49aabda56	event
040000 tree ed25b3215d3887db774479001be62c699649e3a0	http
040000 tree 278990687a0bb6431853e4e9d7f48467b129f330	os