Gets options that the UAC expects the UAS to support in order to process the request.

public SIP_MVGroupHFCollection<SIP_t_OptionTag> Require { get; }

Public ReadOnly Property Require As SIP_MVGroupHFCollection(Of SIP_t_OptionTag)

public:
SIP_MVGroupHFCollection<SIP_t_OptionTag^>^ Require {
	SIP_MVGroupHFCollection<SIP_t_OptionTag^>^ get ();
}