# IDurableSetCommandCodec<T>.Apply(JournalBufferReader, IDurableSetCommandHandler<T>)

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.idurablesetcommandcodec-1/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.idurablesetcommandcodec-1/methods/)

```csharp
public abstract void Apply(JournalBufferReader input, IDurableSetCommandHandler<T> consumer)
```

Reads one encoded command and applies it to `consumer`.

### Parameters

- `input` (`JournalBufferReader`)
- `consumer` (`IDurableSetCommandHandler<T>`)