entriesArray[i] = Multisets.immutableEntry(element, count);
      }
    }
    return new JdkBackedImmutableMultiset<>(
        delegateMap, ImmutableList.asImmutableList(entriesArray), size);
  }

  private JdkBackedImmutableMultiset(
      Map<E, Integer> delegateMap, ImmutableList<Entry<E>> entries, long size) {
    this.delegateMap = delegateMap;
    this.entries = entries;

import org.checkerframework.checker.nullness.qual.Nullable;

/** Never actually created; instead delegates to JdkBackedImmutableMultiset. */
@ElementTypesAreNonnullByDefault
class RegularImmutableMultiset<E> extends ImmutableMultiset<E> {
  static final ImmutableMultiset<Object> EMPTY =
      JdkBackedImmutableMultiset.create(ImmutableList.of());

  RegularImmutableMultiset() {}