```c#
var a = new DataList();
a.Add(1);
Debug.Log(a.Contains(1)); // true
VRCJson.TrySerializeToJson(a, JsonExportType.Minify, out var c);
VRCJson.TryDeserializeFromJson(c.String, out var d);
var e = d.DataList;
Debug.Log(e.Contains(1)); // false
var f = a[0];
Debug.Log(e.Contains(f)); // false
Debug.Log(e.Contains(f.Double)); // true
```