<PackageReference Include="NUnit" Version="4.2.2" />

NUnit.Framework.Constraints.ItemsConstraintExpression

An extension of ResolvableConstraintExpression that adds a no-op Items property for readability.
namespace NUnit.Framework.Constraints { public sealed class ItemsConstraintExpression : ConstraintExpression { public ResolvableConstraintExpression Items { get; } public ItemsConstraintExpression(); public ItemsConstraintExpression(ConstraintBuilder builder); } }