void Become(
	Receive receive,
	bool discardOld = true
)

Sub Become ( 
	receive As Receive,
	Optional discardOld As Boolean = true
)

void Become(
	Receive^ receive, 
	bool discardOld = true
)

abstract Become : 
        receive : Receive * 
        ?discardOld : bool 
(* Defaults:
        let _discardOld = defaultArg discardOld true
*)
-> unit