alternatingKeysAndValues = Arrays.copyOf(alternatingKeysAndValues, 2 * size);
        }
        localAlternatingKeysAndValues = alternatingKeysAndValues;
        if (!throwIfDuplicateKeys) {
          // We want to retain only the last-put value for any given key, before sorting.
          // This could be improved, but orderEntriesByValue is rather rarely used anyway.

        }
        @SuppressWarnings("nullness") // entries 0..localSize-1 are non-null
        Entry<K, V>[] nonNullEntries = (Entry<K, V>[]) entries;
        if (!throwIfDuplicateKeys) {
          // We want to retain only the last-put value for any given key, before sorting.
          // This could be improved, but orderEntriesByValue is rather rarely used anyway.
          nonNullEntries = lastEntryForEachKey(nonNullEntries, size);