成员的完整列表，这些成员属于 com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam,包括所有继承而来的类成员

getBody()	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
getExtension()	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
getMsgIdServer()	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
getStatus()	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
getType()	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
getUpdateParam()	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
QChatUpdateSystemNotificationParam(@NonNull QChatUpdateParam updateParam, long msgIdServer, QChatSystemNotificationType type)	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
setBody(String body)	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
setExtension(Map< String, Object > extension)	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam
setStatus(Integer status)	com.netease.nimlib.sdk.qchat.param.QChatUpdateSystemNotificationParam