lane actor#1 "a" @6:17
lane actor#2 "b" @7:17
lane actor#3 "judge" @11:30 families=fanout#1
region seq#1 seq
region fanout#1 fanout parent=seq#1 @11:14 label="map"
step ask#1 ask "a" @6:28 lane=actor#1 region=seq#1 always
step ask#2 ask "b" @7:28 lane=actor#2 region=seq#1 always
step ask#3 ask "judge" @11:45 lane=actor#3 region=fanout#1 maybe stack
edge ask#1 -> ask#2 seq always
edge ask#1 -> ask#3 data maybe exact
edge ask#2 -> ask#3 data maybe exact
sink ask#3
