y, isSet));     }      public static <K, V> EconomicMapImpl<K, V> create(Equivalence strategy, UnmodifiableEconomicMap<K, V> other, boolean isSet) {         return intercept(new EconomicMapImpl<>(strategy, other, isSet));     }      public static <K, V> EconomicMapImpl<K, V> create(Equivalence strategy, UnmodifiableEconomicSet<K> other, boolean isSet) {         return intercept(new EconomicMapImpl<>(strategy, other, isSet));     }      private EconomicMapImpl(Equivalence strategy, 