IEnumerable<ICategoryNode> RootCategories(
	out int count,
	int pageSize = -1,
	int startIndex = -1
)

Function RootCategories ( 
	<OutAttribute> ByRef count As Integer,
	Optional pageSize As Integer = -1,
	Optional startIndex As Integer = -1
) As IEnumerable(Of ICategoryNode)

IEnumerable<ICategoryNode^>^ RootCategories(
	[OutAttribute] int% count, 
	int pageSize = -1, 
	int startIndex = -1
)

abstract RootCategories : 
        count : int byref * 
        ?pageSize : int * 
        ?startIndex : int 
(* Defaults:
        let _pageSize = defaultArg pageSize -1
        let _startIndex = defaultArg startIndex -1
*)
-> IEnumerable<ICategoryNode>