# TestClusterBuilder.AddSiloBuilderConfigurator

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.testclusterbuilder/) | [Methods](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.testclusterbuilder/methods/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.TestingHost/TestClusterBuilder.cs#L114-L120)

```csharp
public TestClusterBuilder AddSiloBuilderConfigurator<T>()
```

Adds an implementation of [ISiloConfigurator](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.isiloconfigurator/) or [IHostConfigurator](/orleans/docs/api/csharp/microsoft.orleans.testinghost/orleans.testinghost.ihostconfigurator/) to configure silos created by the test cluster.

### Returns

The builder.