}
            // requireNonNull is safe because the first `size` elements have been filled in.
            // We're careful to put only K instances in.
            int index =
                Arrays.binarySearch((K[]) sortedKeys, (K) requireNonNull(keys[i]), comparator);
            sortedValues[index] = requireNonNull(values[i]);
          }
          return new ImmutableSortedMap<K, V>(