public static Task<IEnumerable<NbGroup>> QueryGroupsAsync(
	NbService service = null
)

Public Shared Function QueryGroupsAsync ( 
	Optional service As NbService = Nothing
) As Task(Of IEnumerable(Of NbGroup))

public:
static Task<IEnumerable<NbGroup^>^>^ QueryGroupsAsync(
	NbService^ service = nullptr
)

static member QueryGroupsAsync : 
        ?service : NbService 
(* Defaults:
        let _service = defaultArg service null
*)
-> Task<IEnumerable<NbGroup>>