v2::V2NIMChatroomMemberRoleUpdateAttachment 成员列表

成员的完整列表，这些成员属于 v2::V2NIMChatroomMemberRoleUpdateAttachment,包括所有继承而来的类成员

attachmentType	v2::V2NIMMessageAttachment
chatroomMember	v2::V2NIMChatroomNotificationAttachment
chatroomUpdateParams	v2::V2NIMChatroomNotificationAttachment
currentMember	v2::V2NIMChatroomMemberRoleUpdateAttachment
notificationExtension	v2::V2NIMChatroomNotificationAttachment
operatorId	v2::V2NIMChatroomNotificationAttachment
operatorNick	v2::V2NIMChatroomNotificationAttachment
previousRole	v2::V2NIMChatroomMemberRoleUpdateAttachment
raw	v2::V2NIMMessageAttachment
tags	v2::V2NIMChatroomNotificationAttachment
targetIds	v2::V2NIMChatroomNotificationAttachment
targetNicks	v2::V2NIMChatroomNotificationAttachment
targetTag	v2::V2NIMChatroomNotificationAttachment
type	v2::V2NIMChatroomNotificationAttachment
V2NIMChatroomMemberRoleUpdateAttachment()	v2::V2NIMChatroomMemberRoleUpdateAttachment	inline
V2NIMChatroomNotificationAttachment()	v2::V2NIMChatroomNotificationAttachment	inline
~V2NIMMessageAttachment()=default	v2::V2NIMMessageAttachment	virtual