void Subscribe(
	IList<Subscription> subscriptionList,
	string requestLabel
)

Sub Subscribe ( 
	subscriptionList As IList(Of Subscription),
	requestLabel As String
)

void Subscribe(
	IList<Subscription^>^ subscriptionList, 
	String^ requestLabel
)

abstract Subscribe : 
        subscriptionList : IList<Subscription> * 
        requestLabel : string -> unit