<ExtensionAttribute()>
Public Shared Function Concat(Of T)( _
   ByVal sequence1 As IEnumerable(Of T), _
   ByVal ParamArray sequence2() As T _
) As IEnumerable(Of T)

Dim sequence1 As IEnumerable(Of T)
Dim sequence2() As T
Dim value As IEnumerable(Of T)
 
value = EnumerableFns.Concat(Of T)(sequence1, sequence2)

[ExtensionAttribute()]
public static IEnumerable<T> Concat<T>( 
   IEnumerable<T> sequence1,
   params T[] sequence2
)

[ExtensionAttribute()]
public:
static IEnumerable<T^>^ Concatgeneric<typename T>
( 
   IEnumerable<T^>^ sequence1,
   ... array<T^>^ sequence2
)