public UpdateItemUI(ItemUIAction action)
     : base(Build(action))
 {
     this.action = action;
 }
 public static byte[] Build(ItemUIAction action)
 {
     return new byte[] { 0x77, (byte)action };
 }
 // Methods
 public UpdateItemUI(byte[] data)
     : base(data)
 {
     this.action = (ItemUIAction) data[1];
 }