interface Cat { attribute DOMString name; attribute DOMString owner; boolean isMemberOfBreed([TreatUndefinedAs=EmptyString] DOMString breedName); }; interface Cat { attribute DOMString name; attribute DOMString owner; boolean isMemberOfBreed([TreatUndefinedAs=EmptyString] DOMString breedName); }; attribute DOMString name; attribute DOMString owner; boolean isMemberOfBreed([TreatUndefinedAs=EmptyString] DOMString breedName); TreatUndefinedAs