<PackageReference Include="NUnit" Version="5.0.0" />

NUnit.Framework.Interfaces.IFixtureBuilderForNestedGeneric

The IFixtureBuilderForNestedGeneric interface extends IFixtureBuilderWithFilter by allowing use of an outer builder's data, which is used to supply type arguments to nested generic classes.
IEnumerable<TestSuite> BuildFrom(ITypeInfo typeInfo, IPreFilter filter, Type[][] outerTypeArgsSets)

Builds any number of test fixtures from the specified type.