         case subscriberCount = "channel_downstream_connections"
         case channelId = "channel_id"
         case clientId = "client_id"
+        case connectionId = "connection_id"
         case spotlightId = "spotlight_id"
         case audio = "audio"
         case video = "video"

        subscriberCount = try container.decodeIfPresent(Int.self, forKey: .subscriberCount)
        channelId = try container.decodeIfPresent(String.self, forKey: .channelId)
        clientId = try container.decodeIfPresent(String.self, forKey: .clientId)
        audioEnabled = try container.decodeIfPresent(Bool.self, forKey: .audio)
        videoEnabled = try container.decodeIfPresent(Bool.self, forKey: .video)
        spotlightId = try container.decodeIfPresent(String.self, forKey: .spotlightId)

    
    /// クライアント ID
    public let clientId: String?
    
    /// 接続 ID
    public let connectionId: String?
    
    /// 音声の可否
    public let audioEnabled: Bool?
