Use inheritance for Type subtyping
Use inheritance for Type subtyping

guoyiteng/braid,cucapra/braid,guoyiteng/braid,guoyiteng/braid,guoyiteng/braid,cucapra/braid,guoyiteng/braid,cucapra/braid,cucapra/braid,cucapra/braid,cucapra/braid,guoyiteng/braid