成员的完整列表，这些成员属于 com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption,包括所有继承而来的类成员

getBeginTime()	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
getDirection()	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
getLimit()	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
getMessageTypes()	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
isValid()	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
setBeginTime(long beginTime)	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
setDirection(V2NIMMessageQueryDirection direction)	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
setLimit(int limit)	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
setMessageTypes(List< V2NIMMessageType > messageTypes)	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
V2NIMChatroomMessageListOption()	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption
V2NIMChatroomMessageListOption(V2NIMMessageQueryDirection direction, List< V2NIMMessageType > messageTypes, long beginTime, int limit)	com.netease.nimlib.sdk.v2.chatroom.option.V2NIMChatroomMessageListOption