v2::V2NIMNotificationService 成员列表

成员的完整列表，这些成员属于 v2::V2NIMNotificationService,包括所有继承而来的类成员

addNotificationListener(V2NIMNotificationListener listener)=0	v2::V2NIMNotificationService	pure virtual
removeNotificationListener(V2NIMNotificationListener listener)=0	v2::V2NIMNotificationService	pure virtual
sendCustomNotification(nstd::string conversationId, nstd::string content, V2NIMSendCustomNotificationParams params, V2NIMSuccessCallback< void > success, V2NIMFailureCallback failure)=0	v2::V2NIMNotificationService	pure virtual