# TestClusterBuilder.ContainsSilo(SiloAddress)

[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/1644940b035c7bdf215a4fd7135757c06bcfe9ec/src/Orleans.TestingHost/TestClusterBuilder.cs#L205-L206)

```csharp
public bool ContainsSilo(SiloAddress siloAddress)
```

Returns whether the address belongs to the cluster built by this builder.

### Parameters

- `siloAddress` (`SiloAddress`): The silo address.

### Returns

`true` when the address belongs to this cluster.