# FieldCodecTester<TValue, TCodec>.GetWriteCopy(TValue?)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization.testkit/orleans.serialization.testkit.fieldcodectester-2/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.serialization.testkit/orleans.serialization.testkit.fieldcodectester-2/methods/)

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Orleans.Serialization.TestKit/FieldCodecTester.cs#L113)

```csharp
protected virtual TValue? FieldCodecTester<TValue, GetWriteCopy(TValue? input)
```

### Parameters

- `input` (`TValue?`)