actor-node source
actor-node actor#1 "alpha" @6:3
actor-node actor#2 "beta" @7:3
actor-node actor#3 "merger" @9:46
actor-node sink
actor-edge source -> actor#1 exact count=1
actor-edge source -> actor#2 exact count=1
actor-edge actor#1 -> actor#3 inexact count=1 types="string"
actor-edge actor#1 -> sink exact count=1 types="string"
actor-edge actor#2 -> actor#3 inexact count=1 types="string"
actor-edge actor#2 -> sink exact count=1 types="string"
actor-edge actor#3 -> sink inexact count=1 types="string"
