private static IDisabledFacet Create(DisabledAttribute attribute, ISpecification holder) => attribute == null ? null : new DisabledFacetAnnotation(attribute.Value, holder);
private static IDisabledFacet Create(DisabledAttribute attribute, IFacetHolder holder) { return attribute == null ? null : new DisabledFacetAnnotation(attribute.Value.ToWhen(), holder); }