@interface KGMutableElementIdentifierSet : KGElementIdentifierSet - (void)intersectWithIdentifierSet:(id)a0; - (void)addIdentifier:(unsigned long long)a0; - (void)formSymmetricDifferenceWithIdentifierSet:(id)a0; - (void *)mutableBitmap; - (void)subtractIdentifierSet:(id)a0; - (void)removeAllIdentifiers; - (void)unionWithIdentifierSet:(id)a0; - (id)copy; - (void)removeIdentifier:(unsigned long long)a0; - (id)copyWithZone:(struct _NSZone { } *)a0; @end