# AspireUnionData Properties

- Package: [Aspire.TypeSystem](/reference/api/csharp/aspire.typesystem.md)
- Type: [AspireUnionData](/reference/api/csharp/aspire.typesystem/aspireuniondata.md)
- Kind: `Properties`
- Members: `1`

Name-based adapter for [AspireUnion] attribute data, parsed from `Reflection.CustomAttributeData`.

## Types

- Name: `Types`
- Modifiers: `get; init`
- Returns: `Type[]`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/a3766e994fd2cba86c8ac60b8a80268cab7e6383/src/Aspire.TypeSystem/AttributeDataReader.cs)

Gets the CLR types that form the union.

```csharp
public Type[] Types { get; init; }
```