<ExtensionAttribute> _
Public Shared Sub ForAll(Of TSource) ( _
    source As ParallelQuery(Of TSource), _
    action As Action(Of TSource) _
)

Dim source As ParallelQuery(Of TSource)
Dim action As Action(Of TSource)

source.ForAll(action)

public static void ForAll<TSource>(
    this ParallelQuery<TSource> source,
    Action<TSource> action
)

[ExtensionAttribute]
public:
generic<typename TSource>
static void ForAll(
    ParallelQuery<TSource>^ source, 
    Action<TSource>^ action
)

static member ForAll : 
        source:ParallelQuery<'TSource> * 
        action:Action<'TSource> -> unit