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

extension	com.netease.nimlib.sdk.msg.attachment.NotificationAttachmentWithExtension	protected
fromJson(String json)	com.netease.nimlib.sdk.msg.attachment.NotificationAttachment
getExtension()	com.netease.nimlib.sdk.msg.attachment.NotificationAttachmentWithExtension
getTargets()	com.netease.nimlib.sdk.team.model.MemberChangeAttachment
getType()	com.netease.nimlib.sdk.msg.attachment.NotificationAttachment
parse(JSONObject json)	com.netease.nimlib.sdk.team.model.MemberChangeAttachment
setType(NotificationType type)	com.netease.nimlib.sdk.msg.attachment.NotificationAttachment
toJson(boolean send)	com.netease.nimlib.sdk.msg.attachment.NotificationAttachment