<PackageReference Include="NUnit" Version="2.6.4" />

ReusableConstraint

public class ReusableConstraint : IResolveConstraint
ReusableConstraint wraps a constraint expression after resolving it so that it can be reused consistently.
public ReusableConstraint(IResolveConstraint c)

Construct a ReusableConstraint from a constraint expression

public static ReusableConstraint op_Implicit(Constraint c)

Converts a constraint to a ReusableConstraint

public Constraint Resolve()

Resolves the ReusableConstraint by returning the constraint that it originally wrapped.