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

fromProperty(Property property)	com.netease.nimlib.sdk.msg.model.SessionMsgDeleteOption	static
getExt()	com.netease.nimlib.sdk.msg.model.SessionMsgDeleteOption
getSessionId()	com.netease.nimlib.sdk.msg.model.SessionMsgDeleteOption
getSessionType()	com.netease.nimlib.sdk.msg.model.SessionMsgDeleteOption
getTime()	com.netease.nimlib.sdk.msg.model.SessionMsgDeleteOption
SessionMsgDeleteOption(String sessionId, SessionTypeEnum sessionType, long time, String ext)	com.netease.nimlib.sdk.msg.model.SessionMsgDeleteOption