# Codec_Observation.Serialize(Writer<TBufferWriter>, Observation)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.transactions.testkit.base/orleanscodegen.orleans.transactions.testkit.consistency.codec-observation/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.transactions.testkit.base/orleanscodegen.orleans.transactions.testkit.consistency.codec-observation/methods/)

```csharp
public void Serialize<TBufferWriter>(ref Writer<TBufferWriter> writer, scoped ref Observation instance)
```

Serializes the provided value.

### Parameters

- `writer` (`Writer<TBufferWriter>`): The writer.
- `instance` (`Observation`): The value.