> For the complete documentation index, see [llms.txt](https://docs.yarnspinner.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yarnspinner.dev/3.1/api/csharp/yarn/yarn.header/yarn.header.writeto.md).

# WriteTo(pb::CodedOutputStream)

Method in [Header](/3.1/api/csharp/yarn/yarn.header.md)

## Summary

```csharp
public void WriteTo(pb::CodedOutputStream output)
```

## Parameters

| Name                                       | Description |
| ------------------------------------------ | ----------- |
| `Google.Protobuf.CodedOutputStream` output |             |