public abstract Facebook this[
	string ApplicationKey = null,
	string ApplicationSecret = null
] { get; }

Public MustOverride ReadOnly Property Facebook ( 
	Optional ApplicationKey As String = Nothing,
	Optional ApplicationSecret As String = Nothing
) As Facebook
	Get

public:
virtual property Facebook^ Facebook[String^ ApplicationKey = nullptr, String^ ApplicationSecret = nullptr] {
	Facebook^ get (String^ ApplicationKey = nullptr, String^ ApplicationSecret = nullptr) abstract;
}