这里列出了所有类成员，并附带类的详细说明:

- s -

• sampleRate : V2NIMVoiceToTextParams
• saveAs : V2NIMDownloadMessageAttachmentParams
• saveMessage:forSession:completion: : <NIMConversationManager>
• scene : NIMMessageSetting, NIMResourceExtraInfo
• sceneDict : NIMSDK
• sceneName : V2NIMMessageFileAttachment, V2NIMStorageScene, V2NIMUploadFileParams, V2NIMVoiceToTextParams
• sdkVersion : NIMSDK
• searchAccountId : V2NIMFriendSearchOption, V2NIMUserSearchOption
• searchAlias : V2NIMFriendSearchOption
• searchAllMessages:result: : <NIMConversationManager>
• searchChannelByPage:completion: : <NIMQChatChannelManager>
• searchCloudMessages:success:failure: : <V2NIMMessageService>
• searchContent : NIMMessageSearchOption, NIMTeamSearchOption, NIMUserSearchOption
• searchContentOption : NIMTeamSearchOption, NIMUserSearchOption
• searchEnable : NIMQChatCreateServerParam, NIMQChatServer, NIMQChatUpdateServerParam
• searchFriendByOption:success:failure: : <V2NIMFriendService>
• searchLocalMessages:success:failure: : <V2NIMMessageService>
• searchMessages:option:result: : <NIMConversationManager>
• searchMobile : V2NIMUserSearchOption
• searchMsgByPage:completion: : <NIMQChatMessageManager>
• searchName : V2NIMUserSearchOption
• searchRange : NIMUserSearchOption
• searchResourceFiles:completion: : <NIMResourceManager>
• searchServerByPage:completion: : <NIMQChatServerManager>
• searchServerChannelMember:completion: : <NIMQChatServerManager>
• searchServerMemberByPage:completion: : <NIMQChatServerManager>
• searchStartTime : V2NIMMessageSearchExParams
• searchTeamByKeyword:success:failure: : <V2NIMTeamService>
• searchTeamMembers:completion: : <NIMSuperTeamManager>
• searchTeamMembers:success:failure: : <V2NIMTeamService>
• searchTeamWithOption:completion: : <NIMTeamManager>
• searchTimePeriod : V2NIMMessageSearchExParams
• searchType : NIMQChatCreateServerParam, NIMQChatSearchServerByPageParam, NIMQChatServer, NIMQChatUpdateServerParam
• searchUserByOption:success:failure: : <V2NIMUserService>
• searchUserWithOption:completion: : <NIMUserManager>
• SECURITY_LINK : V2NIMStorageSceneConfig
• seek: : <NIMMediaManager>
• selfMember : V2NIMChatroomEnterResult
• selfReplyed : NIMQChatMessageQuickCommentsDetail
• selfUid : V2NIMSignallingConfig
• sendAIConfig : NIMMessage
• sendControl:receiverAccountId:serverExtension:success:failure: : <V2NIMSignallingService>
• sendCustomNotification:content:params:success:failure: : <V2NIMNotificationService>
• sendCustomNotification:toSession:completion: : <NIMSystemNotificationManager>
• sender : NIMBroadcastMessage, NIMCustomSystemNotification
• senderAccountIds : V2NIMMessageSearchExParams, V2NIMMessageSearchParams
• senderArray : NIMMessageFullKeywordSearchOption, NIMMessageFullKeywordSearchOrderByTimeOption
• senderAvatar : V2NIMUserInfoConfig
• senderClientType : NIMMessage, NIMQChatMessage, V2NIMChatroomMessage
• senderClientTypes : NIMSubscribeOnlineInfo
• senderExtension : V2NIMUserInfoConfig
• senderId : V2NIMBroadcastNotification, V2NIMChatroomMessage, V2NIMCustomNotification, V2NIMMessageRefer
• senderName : NIMMessage, NIMQChatMessage, V2NIMLastMessage
• senderNick : V2NIMUserInfoConfig
• sendForwardMessage:toSession:error: : <NIMChatManager>, <NIMQChatMessageManager>
• sendingState : V2NIMChatroomMessage, V2NIMLastMessage, V2NIMMessage
• sendMessage:conversationId:params:success:failure:progress: : <V2NIMMessageService>
• sendMessage:didCompleteWithError: : <NIMChatManagerDelegate>, <NIMQChatMessageManagerDelegate>
• sendMessage:params:success:failure:progress: : <V2NIMChatroomService>
• sendMessage:progress: : <NIMChatManagerDelegate>, <NIMQChatMessageManagerDelegate>
• sendMessage:toSession:completion: : <NIMChatManager>, <NIMQChatMessageManager>
• sendMessage:toSession:error: : <NIMChatManager>, <NIMQChatMessageManager>
• sendMessageReceipt:completion: : <NIMChatManager>
• sendMessageTypingEvent:completion: : <NIMQChatMessageManager>
• sendP2PMessageReceipt:success:failure: : <V2NIMMessageService>
• sendSystemNotification:completion: : <NIMQChatMessageManager>
• sendTeamMessageReceipts:completion: : <NIMChatManager>
• sendTeamMessageReceipts:success:failure: : <V2NIMMessageService>
• sendToOnlineUsersOnly : NIMCustomSystemNotification, NIMSubscribeEvent
• server : <NIMQChatApplyJoinServerMemberAcceptAttachment>, <NIMQChatApplyJoinServerMemberDoneAttachment>, <NIMQChatCreateServerAttachment>, NIMQChatCreateServerResult, <NIMQChatInviteServerMemberAcceptAttachment>, <NIMQChatInviteServerMembersDoneAttachment>, <NIMQChatKickServerMembersDoneAttachment>, <NIMQChatLeaveServerAttachment>, <NIMQChatServerJoinByInviteCodeNotificationAttachment>, <NIMQChatUpdateServerAttachment>, <NIMQChatUpdateServerMemberAttachment>, NIMQChatUpdateServerResult
• serverAccids : NIMQChatGetServerMembersParam
• serverCustomInfo : NIMTeam
• serverExt : NIMRecentSession, NIMUser, NIMUserAddAttachment
• serverExtension : V2NIMAddCollectionParams, V2NIMChatroomEnterParams, V2NIMChatroomInfo, V2NIMChatroomKickedInfo, V2NIMChatroomMember, V2NIMChatroomMessage, V2NIMChatroomSelfMemberUpdateParams, V2NIMChatroomUpdateParams, V2NIMClearHistoryMessageOption, V2NIMClearHistoryNotification, V2NIMCollection, V2NIMConversation, V2NIMConversationGroup, V2NIMConversationUpdate, V2NIMCreateTeamParams, V2NIMFriend, V2NIMFriendSetParams, V2NIMLastMessage, V2NIMMessage, V2NIMMessageDeletedNotification, V2NIMMessageNotificationAttachment, V2NIMMessagePin, V2NIMMessageQuickComment, V2NIMMessageRevokeNotification, V2NIMMessageRevokeParams, V2NIMModifyMessageParams, V2NIMSignallingAcceptInviteParams, V2NIMSignallingCallParams, V2NIMSignallingCallSetupParams, V2NIMSignallingCancelInviteParams, V2NIMSignallingEvent, V2NIMSignallingInviteParams, V2NIMSignallingJoinParams, V2NIMSignallingRejectInviteParams, V2NIMTeam, V2NIMTeamInviteParams, V2NIMTeamJoinActionInfo, V2NIMTeamMember, V2NIMUpdatedTeamInfo, V2NIMUpdateSelfMemberInfoParams, V2NIMUpdateTeamInfoParams, V2NIMUser, V2NIMUserStatus, V2NIMUserUpdateParams
• serverID : NIMChatExtendBasicInfo
• serverId : NIMHistoryMessageSearchOption, NIMIncompleteSessionInfo
• serverID : NIMMessage
• serverId : NIMQChatAcceptServerApplyParam, NIMQChatAcceptServerInviteParam, NIMQChatAddChannelCategoryMemberRoleParam, NIMQChatAddChannelCategoryRoleParam, NIMQChatAddChannelRoleParam, NIMQChatAddMemberRoleParam, <NIMQChatAddServerRoleMembersNotificationAttachment>, NIMQChatAddServerRoleMembersParam, NIMQChatApplyServerJoinParam, <NIMQChatAutoUnmuteAttachment>, NIMQChatChannel, NIMQChatChannelCategory, NIMQChatChannelCategoryIdInfo, NIMQChatChannelCategoryMemberRole, NIMQChatChannelCategoryRole, NIMQChatChannelIdInfo, NIMQChatChannelMember, NIMQChatChannelMuteParam, NIMQChatChannelRole, NIMQChatCheckPermissionParam, NIMQChatCheckPermissionsParam, NIMQChatCreateChannelCategoryParam, NIMQChatCreateChannelParam, NIMQChatCreateServerRoleParam, NIMQChatDeleteServerParam, NIMQChatDeleteServerRoleParam, NIMQChatFetchQuickCommentsByMsgIdsParam, NIMQChatGenerateInviteCodeParam, NIMQChatGenerateInviteCodeResult, NIMQChatGetCategoriesInServerByPageParam, NIMQChatGetChannelBlackWhiteMembersByPageParam, NIMQChatGetChannelBlackWhiteRolesByPageParam, NIMQChatGetChannelCategoryBlackWhiteMembersByPageParam, NIMQChatGetChannelCategoryBlackWhiteRolesByPageParam, NIMQChatGetChannelCategoryMemberRolesParam, NIMQChatGetChannelCategoryRolesParam, NIMQChatGetChannelMembersByPageParam, NIMQChatGetChannelMuteMemberByPageParam, NIMQChatGetChannelRolesParam, NIMQChatGetChannelsByPageParam, NIMQChatGetChannelsInCategoryByPageParam, NIMQChatGetCommentatorsParam, NIMQChatGetExistingAccidsInServerRoleParam, NIMQChatGetExistingAccidsOfMemberRolesParam, NIMQChatGetExistingChannelBlackWhiteMembersParam, NIMQChatGetExistingChannelBlackWhiteRolesParam, NIMQChatGetExistingChannelCategoryBlackWhiteMembersParam, NIMQChatGetExistingChannelCategoryBlackWhiteRolesParam, NIMQChatGetExistingChannelRolesByServerRoleIdsParam, NIMQChatGetExistingServerRoleMembersByAccidsParam, NIMQChatGetInviteApplyRecordOfServerParam, NIMQChatGetLastMessageOfChannelsParam, NIMQChatGetMemberRolesParam, NIMQChatGetMentionedMeMessagesParam, NIMQChatGetMessageCacheParam, NIMQChatGetMessageHistoryByIdsParam, NIMQChatGetMessageHistoryParam, NIMQChatGetServerBanedMembersByPageParam, NIMQChatGetServerMemberItem, NIMQChatGetServerMembersByPageParam, NIMQChatGetServerMuteMemberByPageParam, NIMQChatGetServerRoleMembersParam, NIMQChatGetServerRolesByAccidParam, NIMQChatGetServerRolesParam, NIMQChatGetUncategorizedChannelsByPageParam, NIMQChatInviteApplyHistoryRecord, NIMQChatInviteServerMembersParam, NIMQChatJoinByInviteCodeParam, NIMQChatKickServerMembersParam, NIMQChatLeaveServerParam, <NIMQChatManualUnmuteAttachment>, NIMQChatMarkMessageReadParam, NIMQChatMemberRole
• serverID : NIMQChatMessage
• serverId : NIMQChatMessageQuickCommentInfo
• serverID : NIMQChatMessageServerIdInfo
• serverId : NIMQChatMessageTypingEvent, <NIMQChatMuteNotificationAttachment>, NIMQChatRejectServerApplyParam, NIMQChatRejectServerInviteParam, NIMQChatRemoveChannelCategoryMemberRoleParam, NIMQChatRemoveChannelCategoryRoleParam, NIMQChatRemoveChannelRoleParam, NIMQChatRemoveMemberRoleParam, NIMQChatRemoveServerRoleMemberParam, <NIMQChatRemoveServerRoleMembersNotificationAttachment>, NIMQChatRTCChannelOnlineMember, NIMQChatRTCUpdateChannelInfoParam, NIMQChatSearchChannelByPageParam, NIMQChatSearchMsgByPageParam, NIMQChatSearchServerChannelMemberParam, NIMQChatSearchServerMemberByPageParam, NIMQChatSendSystemNotificationParam, NIMQChatServer, NIMQChatServerMember, NIMQChatServerMemberBanInfo, NIMQChatServerMuteParam, NIMQChatServerRole, NIMQChatServerRoleMember, NIMQChatServerUnreadInfo, NIMQChatSystemNotification, NIMQChatUnreadInfo, NIMQChatUpdateChannelBlackWhiteMembersInfo, NIMQChatUpdateChannelBlackWhiteMembersParam, NIMQChatUpdateChannelBlackWhiteRoleInfo, NIMQChatUpdateChannelBlackWhiteRoleParam, NIMQChatUpdateChannelCategoryBlackWhiteMemberInfo, NIMQChatUpdateChannelCategoryBlackWhiteMembersParam, NIMQChatUpdateChannelCategoryBlackWhiteRoleInfo, NIMQChatUpdateChannelCategoryBlackWhiteRoleParam, NIMQChatUpdateChannelCategoryMemberRoleParam, NIMQChatUpdateChannelCategoryRoleParam, <NIMQChatUpdateChannelRoleAuthNotificationAttachment>, NIMQChatUpdateChannelRoleParam, NIMQChatUpdatedMyMemberInfo, <NIMQChatUpdateMemberRoleAuthNotificationAttachment>, NIMQChatUpdateMemberRoleParam, NIMQChatUpdateMyMemberInfoParam, NIMQChatUpdateQuickCommentInfo, NIMQChatUpdateServerMemberBanParam, NIMQChatUpdateServerMemberInfoParam, NIMQChatUpdateServerParam, <NIMQChatUpdateServerRoleAuthNotificationAttachment>, NIMQChatUpdateServerRoleParam, NIMQChatupdateServerRolePrioritiesParam, NIMQChatUpdateServerRolePriorityItem, NIMQChatUserPushNotificationConfig, V2NIMCustomUserStatusPublishResult
• serverId_categoryId: : NIMQChatChannelCategoryIdInfo
• serverIdInfo : NIMQChatMessageRefer
• serverIds : NIMQChatEnterServerAsVisitorParam, NIMQChatGetServersParam, NIMQChatLeaveServerAsVisitorParam, NIMQChatMarkServerReadParam, NIMQChatSubscribeAllChannelParam, NIMQChatSubscribeServerAsVisitorParam
• serverMember : <NIMQChatUpdateServerMemberAttachment>
• serverMembers : NIMQChatSearchServerChannelMemberResult, NIMQChatSearchServerMemberByPageResult
• serverRoleArray : NIMQChatGetExistingChannelBlackWhiteRolesResult, NIMQChatGetExistingChannelCategoryBlackWhiteRolesResult, NIMQChatGetServerRolesResult, NIMQChatupdateServerRolePrioritiesResult
• serverRoles : NIMQChatGetServerRolesByAccidResult
• servers : NIMQChatGetServersByPageResult, NIMQChatGetServersResult, NIMQChatSearchServerByPageResult
• serverSetting : NIMSDK
• serverTypes : NIMQChatSearchServerByPageParam
• serverUnreadInfoChanged: : <NIMQChatMessageManagerDelegate>
• session : NIMAddStickTopSessionParams, NIMChatExtendBasicInfo, NIMGetMessagesDynamicallyParam, NIMImportedRecentSession, NIMIncompleteSessionInfo, NIMMessage, NIMMessagePinItem, NIMMessageReceipt, NIMMessagesInSessionOption, NIMMsgIndexRecord, NIMQChatMessage, NIMRecentSession, NIMRevokeMessageNotification, NIMSessionDeleteAllRemoteMessagesInfo, NIMStickTopSessionInfo, NIMSyncMessagePinRequest
• session:type: : NIMSession
• sessionDatabaseBackupEnabled : NIMSDKConfig
• sessionForQChat:qchatServerId: : NIMSession
• sessionFromString: : NIMSession
• sessionId : NIMSession, NIMTeamMessageReceiptDetail
• sessionLimit : NIMMessageFullKeywordSearchOption
• sessions : NIMMsgIndexQueryResult
• sessionType : NIMSession
• setAddApplicationRead:failure: : <V2NIMFriendService>
• setDeactivateAudioSessionAfterComplete: : <NIMMediaManager>
• setDndConfig:success:failure: : <V2NIMSettingService>
• setExt: : NIMSubscribeEvent
• setFriendInfo:params:success:failure: : <V2NIMFriendService>
• setMemberBlockedStatus:blocked:notificationExtension:success:failure: : <V2NIMChatroomService>
• setMemberChatBannedStatus:chatBanned:notificationExtension:success:failure: : <V2NIMChatroomService>
• setMemberTempChatBanned:tempChatBannedDuration:notificationEnabled:notificationExtension:success:failure: : <V2NIMChatroomService>
• setNeedProximityMonitor: : <NIMMediaManager>
• setP2PMessageMuteMode:muteMode:success:failure: : <V2NIMSettingService>
• setPushMobileOnDesktopOnline:success:failure: : <V2NIMSettingService>
• setReconnectDelayProvider: : <V2NIMLoginService>
• setTeamChatBannedMode:teamType:chatBannedMode:success:failure: : <V2NIMTeamService>
• setTeamMemberChatBannedStatus:teamType:accountId:chatBanned:success:failure: : <V2NIMTeamService>
• setTeamMessageMuteMode:teamType:muteMode:success:failure: : <V2NIMSettingService>
• setTempChatBannedByTag:success:failure: : <V2NIMChatroomService>
• setting : NIMCustomSystemNotification, NIMMessage, NIMQChatMessage, NIMQChatSendSystemNotificationParam, NIMQChatSystemNotification, NIMQuickComment
• setUploadURL: : NIMAudioObject, NIMFileObject, NIMImageObject, NIMVideoObject
• setupSDKDir: : NIMSDKConfig
• sharedConfig : NIMQChatConfig, NIMSDKConfig
• sharedSDK : NIMSDK
• shortUrlToLong:success:failure: : <V2NIMStorageService>
• shouldBeCounted : NIMCustomSystemNotificationSetting, NIMMessageSetting, NIMRevokeMessageOption
• shouldConsiderRevokedMessageUnreadCount : NIMSDKConfig
• shouldCountTeamNotification : NIMSDKConfig
• shouldExportMessage: : <NIMExportMessageDelegate>
• shouldIgnoreMessage: : <NIMSDKConfigDelegate>
• shouldIgnoreNotification: : <NIMSDKConfigDelegate>
• shouldImportMessage: : <NIMImportMessageDelegate>
• shouldMarkAllMessagesReadInSessions : NIMDeleteRecentSessionOption
• shouldPushNotificationWhenPCOnline : NIMPushNotificationMultiportConfig
• shouldSyncStickTopSessionInfos : NIMSDKConfig
• shouldSyncUnreadCount : NIMSDKConfig
• shouldUseBuiltInMic : <NIMMediaManager>
• showDetail : V2NIMDndConfig
• sign : NIMUserInfo, V2NIMUser, V2NIMUserUpdateParams
• signalingAccept:completion: : <NIMSignalManager>
• signalingCall:completion: : <NIMSignalManager>
• signalingCallEx:completion: : <NIMSignalManager>
• signalingCancelInvite:completion: : <NIMSignalManager>
• signalingCloseChannel:completion: : <NIMSignalManager>
• signalingControl:completion: : <NIMSignalManager>
• signalingCreateChannel:completion: : <NIMSignalManager>
• signalingInvite:completion: : <NIMSignalManager>
• signalingJoinAndAccept:completion: : <NIMSignalManager>
• signalingJoinChannel:completion: : <NIMSignalManager>
• signalingLeaveChannel:completion: : <NIMSignalManager>
• signalingQueryChannelInfo:completion: : <NIMSignalManager>
• signalingReject:completion: : <NIMSignalManager>
• signallingConfig : V2NIMSignallingCallParams, V2NIMSignallingCallSetupParams, V2NIMSignallingInviteParams, V2NIMSignallingJoinParams
• signalManager : NIMSDK
• size : NIMImageObject, V2NIMMessageFileAttachment
• SM2X : NIMSM2Option
• SM2Y : NIMSM2Option
• sn : NIMGenericTypeAPICallParam, NIMGenericTypeAPICallResult
• sortByStickTopInfos : NIMLoadRecentSessionsOptions
• sortOrder : <V2NIMBaseConversation>, V2NIMMessageSearchParams
• sortRecentSessions:withStickTopInfos: : <NIMChatExtendManager>
• sortType : NIMQChatGetCategoriesInServerByPageParam, NIMQChatGetExistingAccidsInServerRoleParam, NIMQChatSearchChannelByPageParam, NIMQChatSearchMsgByPageParam, NIMQChatSearchServerByPageParam
• source : NIMChatroomNotificationContent, V2NIMError, V2NIMFriend
• sourceFileUrl : NIMDocTranscodingInfo
• sourceID : NIMSuperTeamNotificationContent, NIMSystemNotification, NIMTeamNotificationContent
• sourceSize : NIMDocTranscodingInfo
• sourceType : NIMDocTranscodingInfo
• start : NIMBatchDeleteMessagesOption, NIMThreadTalkFetchOption
• startTime : NIMGetMessagesDynamicallyParam, NIMHistoryMessageSearchOption, NIMMessageFullKeywordSearchOption, NIMMessageFullKeywordSearchOrderByTimeOption, NIMMessageSearchOption, NIMMessageServerRetrieveOption, NIMMsgIndexQueryOption, NIMQChatSearchChannelByPageParam, NIMQChatSearchServerByPageParam
• state : NIMDocTranscodingInfo, V2NIMDataSyncDetail
• status : NIMMessage, NIMQChatInviteApplyDataUserInfo, NIMQChatInviteApplyHistoryRecord, NIMQChatMessage, NIMQChatMessageUpdateContent, NIMQChatPermissionStatusInfo, NIMQChatSystemNotification, NIMQChatUpdateMessageInfo, NIMQChatUpdateSystemNotificationParam, V2NIMFriendAddApplication, V2NIMFriendAddApplicationQueryOption, V2NIMMessageCallAttachment, V2NIMTeamJoinActionInfoQueryOption
• statusType : V2NIMCustomUserStatusParams, V2NIMUserStatus
• stickTop : <V2NIMBaseConversation>
• stickTopConversation:stickTop:success:failure: : <V2NIMConversationService>, <V2NIMLocalConversationService>
• stickTopInfoForSession: : <NIMChatExtendManager>
• stopPlay : <NIMMediaManager>
• stopPlayAudio:didCompletedWithError: : <NIMMediaManagerDelegate>
• stopRecord : <NIMMediaManager>
• strictMode : V2NIMMessageListOption
• subMessages : NIMThreadTalkFetchResult
• subMessages: : <NIMChatExtendManager>
• subMessagesCount: : <NIMChatExtendManager>
• subscribeAllChannel:completion: : <NIMQChatServerManager>
• subscribeAsVisitor:completion: : <NIMQChatChannelManager>, <NIMQChatServerManager>
• subscribeChannel:completion: : <NIMQChatChannelManager>
• subscribeEvent:completion: : <NIMEventSubscribeManager>
• subscribeInfo : NIMSubscribeEvent
• subscribeManager : NIMSDK
• subscribeServer:completion: : <NIMQChatServerManager>
• subscribeTime : V2NIMUserStatusSubscribeResult
• subscribeType : NIMQChatSubscribeAllChannelParam, NIMQChatSubscribeChannelParam, NIMQChatSubscribeServerParam
• subscribeUnreadCountByFilter: : <V2NIMConversationService>, <V2NIMLocalConversationService>
• subscribeUserStatus:success:failure: : <V2NIMSubscriptionService>
• subType : NIMQChatMessage, NIMQChatUpdateMessageInfo, V2NIMChatroomMessage, V2NIMLastMessage, V2NIMMessage, V2NIMModifyMessageParams
• subTypes : NIMQChatSearchMsgByPageParam
• successfulAccidArray : NIMQChatAddServerRoleMembersResult, NIMQChatRemoveServerRoleMembersResult
• successServerIds : NIMQChatMarkServerReadResult
• superTeamConversationId: : V2NIMConversationIdUtil
• superTeamManager : NIMSDK
• switchAudioOutputDevice: : <NIMMediaManager>
• symEncryptionType : NIMEncryptionConfig
• sync : NIMHistoryMessageSearchOption, NIMThreadTalkFetchOption
• syncEnabled : NIMMessageSetting, NIMSubscribeEvent, NIMSubscribeRequest
• syncLevel : V2NIMLoginOption
• syncMessageTypes : NIMHistoryMessageSearchOption
• syncMode : NIMQChatChannel, NIMQChatCreateChannelParam, NIMQChatUpdateCategoryInfoOfChannelParam
• syncMsgIndex:session:completion: : <NIMIndexManager>
• systemNotification : NIMQChatResendSystemNotificationParam, NIMQChatSendSystemNotificationResult, NIMQChatSystemNotificationUpdateResult, NIMQChatUpdateSystemNotificationResult
• systemNotificationManager : NIMSDK
• systemNotifications : NIMQChatReceiveSystemNotificationResult
• systemStateManager : NIMSDK