# BackwardCompatible Properties

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.versions.compatibility.backwardcompatible/)

## Singleton {#singleton-a49ebc63}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.versions.compatibility.backwardcompatible/properties/singleton-a49ebc63/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Versions/Compatibility/BackwardCompatible.cs#L14)

```csharp
public static BackwardCompatible Singleton
```

Gets the singleton instance of this class.