<PackageReference Include="NUnit" Version="3.0.0-rc" />

ISimpleTestBuilder

public interface ISimpleTestBuilder
The ISimpleTestBuilder interface is exposed by a class that knows how to build a single TestMethod from a suitable MethodInfo Types. In general, it is exposed by an attribute, but may be implemented in a helper class used by the attribute in some cases.
using NUnit.Framework.Internal; namespace NUnit.Framework.Interfaces { public interface ISimpleTestBuilder { TestMethod BuildFrom(IMethodInfo method, Test suite); } }