type Blocks
import bend-visgraph@2.0.0.0/parallel.bend as Parallelimport Base
import bend-visgraph@2.0.0.0/visgraph.bend as VG
23# The stack runs on blocks in parallel; a merge then walks the blocks in
24# order.
25type Blocks is Data:
26 BOne{b: VG.Block}
27 BJoin{a: Blocks, b: Blocks}