Server.Packets.DataPacket.this C# (CSharp) Méthode

        public object this[PacketField field]
        {
            set {
                if(this.container.ContainsKey(field)) {
                    this.container[field].Value = value;
                }
            }
            get {
                if(this.container.ContainsKey(field)) {
                    return this.container[field];
                } else {
                    return null;
                }
            }
        }