<PackageReference Include="NUnit" Version="4.3.2" />

NUnit.Framework.Constraints.AttributeOperator

Operator that tests for the presence of a particular attribute on a type and optionally applies further tests to the attribute.
namespace NUnit.Framework.Constraints { } namespace NUnit.Framework.Constraints { public class AttributeOperator : SelfResolvingOperator { public AttributeOperator(Type type); } }