bool IsPlanar(
	ref IGePlane plane = null
)

Function IsPlanar ( 
	Optional ByRef plane As IGePlane = Nothing
) As Boolean

bool IsPlanar(
	IGePlane^% plane = nullptr
)

abstract IsPlanar : 
        ?plane : IGePlane byref 
(* Defaults:
        let _plane = defaultArg plane null
*)
-> bool