*aResult = new nsStringEnumerator(aArray, PR_FALSE);
*aResult = new nsStringEnumerator(aArray, aOwner);
NS_NewUTF8StringEnumerator(nsIUTF8StringEnumerator** aResult,                           const nsCStringArray* aArray){    NS_ENSURE_ARG_POINTER(aResult);    NS_ENSURE_ARG_POINTER(aArray);        *aResult = new nsStringEnumerator(aArray, PR_FALSE);    return StringEnumeratorTail(aResult);}