<ExtensionAttribute> _
Public Shared Function Select(Of TSource, TResult) ( _
    source As ParallelQuery(Of TSource), _
    selector As Func(Of TSource, TResult) _
) As ParallelQuery(Of TResult)

Dim source As ParallelQuery(Of TSource)
Dim selector As Func(Of TSource, TResult)
Dim returnValue As ParallelQuery(Of TResult)

returnValue = source.Select(selector)

public static ParallelQuery<TResult> Select<TSource, TResult>(
    this ParallelQuery<TSource> source,
    Func<TSource, TResult> selector
)

[ExtensionAttribute]
public:
generic<typename TSource, typename TResult>
static ParallelQuery<TResult>^ Select(
    ParallelQuery<TSource>^ source, 
    Func<TSource, TResult>^ selector
)

static member Select : 
        source:ParallelQuery<'TSource> * 
        selector:Func<'TSource, 'TResult> -> ParallelQuery<'TResult>