040000 tree 2bffc8f917e7e0b21ecb5fd91470f50f43d7e687	building
040000 tree af71a769fe0690bed4906f89bb62cd20a6afa0b4	cmake_commands
040000 tree acc73ad0e92da9fc2083811423673b533ab6ac60	getting_started
040000 tree abfbb25cdb61b86959ebe1eb3adca127a2eb7fd4	subprojects