sip_ua library Null safety

only expose the bare minimum of internals required

Classes

Call
CallState
EnumHelper
Provides a collection of methods that help when working with enums.
Notify
RegisterParams
RegistrationState
SIPMessageRequest
SIPUAHelper
SipUaHelperListener
TransportState
UaSettings
WebSocketSettings

Enums

CallStateEnum
DtmfMode
RegistrationStateEnum
TransportStateEnum