public boolean equals(@Nullable Object object) {
    return Maps.equalsImpl(this, object);
  }

  @Override
  public int hashCode() {
    // not caching hash code since it could change if map values are mutable
    // in a way that modifies their hash codes
    return entrySet().hashCode();
  }

  @Override
  public String toString() {
    return Maps.toStringImpl(this);
  }

      default:
        /*
         * The current implementation will end up using entryArray directly, though it will write
         * over the (arbitrary, potentially mutable) Entry objects actually stored in entryArray.
         */
        return RegularImmutableMap.fromEntries(entryArray);
    }
  }

  private static <K extends Enum<K>, V> ImmutableMap<K, ? extends V> copyOfEnumMap(