reject method
To reject the current call invitation, you can use the customData
parameter if you need to provide a reason for the rejection to the other party.
Additionally, the inviting party can receive notifications of the
rejection by listening to onOutgoingCallRejectedCauseBusy
or
onOutgoingCallDeclined
when the other party declines the call invitation.
Implementation
Future<bool> reject({
String customData = '',
}) async {
return _invitation.reject(customData: customData);
}