on
Starts an edge that fires when the current node emits route as a Route.Tag; PendingEdgeChain.then completes it.
Starts an edge that fires when the current node emits route as a Route.Num; PendingEdgeChain.then completes it.
Starts an edge that fires when the current node emits route as a Route.Flag; PendingEdgeChain.then completes it.
Starts an edge that fires when the current node emits route; PendingEdgeChain.then completes it.
Starts one edge that fires once when the current node emits any of routes (built with EdgesBuilder.anyOf); PendingEdgeChain.then completes it.