# AllCompatibleVersions Properties

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

## Singleton {#singleton-d0ad1d29}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.versions.selector.allcompatibleversions/properties/singleton-d0ad1d29/)

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

```csharp
public static AllCompatibleVersions Singleton
```

Gets the singleton instance of this class.