Is support ByRef Parameter in Xamarin Android?

Hello,

I have a function in WCF service with ByRef parameter which is working fine in windows phone but not supporting in Xamarin Android. The following is my function:

Function GetHeader(ByVal InputParameters As String, _ ByVal OutputParameters As String, _ ByVal DeviceTokenEntry() As String) As String

   // implementation

End Function

Can anyone tell how can we use ByRef parameter in Xamarin Android ?

Thanks, Naresh K