actor-node source
actor-node actor#1 "wa" @7:11
actor-node actor#2 "wb" @8:11
actor-node actor#3 "wc" @11:22
actor-node actor#4 "reader" @13:19
actor-node sink
actor-edge source -> actor#1 exact count=1
actor-edge source -> actor#2 exact count=1
actor-edge source -> actor#3 exact count=1
actor-edge actor#1 -> actor#4 exact count=1 types="R"
actor-edge actor#3 -> actor#4 exact count=1 types="string"
actor-edge actor#4 -> sink exact count=1 types="string"
