     
     /// メタデータ
     public let metadata: SignalingMetadata?
-    
+
+    /// エンコーディング
+    public let encodings: [Encoding]?
+
 }
 
 /**

        case sdp
        case config
        case metadata
    }
    
    public init(from decoder: Decoder) throws {

        metadata =
            try container.decodeIfPresent(SignalingMetadata.self,
                                          forKey: .metadata)
        encodings =
            try container.decodeIfPresent([Encoding].self,
                                          forKey: .encodings)
    }

    public func encode(to encoder: Encoder) throws {
        throw SoraError.invalidSignalingMessage
    }
