Imports oss.terrastruct.com/d2/d2ast oss.terrastruct.com/d2/d2format oss.terrastruct.com/d2/d2graph oss.terrastruct.com/d2/d2oracle oss.terrastruct.com/d2/d2target oss.terrastruct.com/util-go/go2 Standard library imports fmt math/rand strings time