# DevelopmentSiloBuilderExtensions Methods

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.development.developmentsilobuilderextensions/)

## UseInMemoryLeaseProvider(ISiloBuilder) {#useinmemoryleaseprovider-this-orleans-hosting-isilobuilder-1caf0675}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.development.developmentsilobuilderextensions/methods/useinmemoryleaseprovider-this-orleans-hosting-isilobuilder-1caf0675/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Runtime/Development/DevelopmentSiloBuilderExtensions.cs#L22)

```csharp
public static ISiloBuilder UseInMemoryLeaseProvider(this ISiloBuilder builder)
```

Configures silo with test/development features.

### Parameters

- `builder` (`ISiloBuilder`): The builder.

### Returns

The builder.