static final FieldSetter<? super ConcurrentHashMultiset<?>> COUNT_MAP_FIELD_SETTER =
        Serialization.getFieldSetter(ConcurrentHashMultiset.class, "countMap");
  }

  /**
   * Creates a new, empty {@code ConcurrentHashMultiset} using the default initial capacity, load
   * factor, and concurrency settings.
   */
  public static <E> ConcurrentHashMultiset<E> create() {

  }

  public void testCreate() {
    ConcurrentHashMultiset<Integer> multiset = ConcurrentHashMultiset.create();
    assertTrue(multiset.isEmpty());
    reserializeAndAssert(multiset);
  }

  public void testCreateFromIterable() {
    Iterable<Integer> iterable = asList(1, 2, 2, 3, 4);
    ConcurrentHashMultiset<Integer> multiset = ConcurrentHashMultiset.create(iterable);
    assertEquals(2, multiset.count(2));

  }

  public void testCreate() {
    ConcurrentHashMultiset<Integer> multiset = ConcurrentHashMultiset.create();
    assertTrue(multiset.isEmpty());
    reserializeAndAssert(multiset);
  }

  public void testCreateFromIterable() {
    Iterable<Integer> iterable = asList(1, 2, 2, 3, 4);
    ConcurrentHashMultiset<Integer> multiset = ConcurrentHashMultiset.create(iterable);
    assertEquals(2, multiset.count(2));

  }

  private void testAddAndRemove(ConcurrentMap<String, AtomicInteger> map)
      throws ExecutionException, InterruptedException {

    final ConcurrentHashMultiset<String> multiset = new ConcurrentHashMultiset<>(map);
    int nThreads = 20;
    int tasksPerThread = 10;
    int nTasks = nThreads * tasksPerThread;
    ExecutorService pool = Executors.newFixedThreadPool(nThreads);

 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.util.concurrent.MoreExecutors.directExecutor;

import com.google.common.collect.ConcurrentHashMultiset;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableMultiset;
import com.google.common.collect.Multiset;
import com.google.common.testing.TestLogHandler;
import java.util.Map;

 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.util.concurrent.MoreExecutors.directExecutor;

import com.google.common.collect.ConcurrentHashMultiset;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableMultiset;
import com.google.common.collect.Multiset;
import com.google.common.testing.TestLogHandler;
import java.util.Map;

      }
    },
    ConcurrentHashMultisetImpl {
      @Override
      public <E extends Comparable<E>> Multiset<E> create(Collection<E> contents) {
        return ConcurrentHashMultiset.create(contents);
      }
    },
    ImmutableMultisetImpl {
      @Override
      public <E extends Comparable<E>> Multiset<E> create(Collection<E> contents) {

      }
    },
    ConcurrentHashMultisetImpl {
      @Override
      public <E extends Comparable<E>> Multiset<E> create(Collection<E> contents) {
        return ConcurrentHashMultiset.create(contents);
      }
    },
    ImmutableMultisetImpl {
      @Override
      public <E extends Comparable<E>> Multiset<E> create(Collection<E> contents) {

 *
 * <p><b>Note:</b> If your values are always positive and less than 2^31, you may wish to use a
 * {@link com.google.common.collect.Multiset} such as {@link
 * com.google.common.collect.ConcurrentHashMultiset} instead.
 *
 * <p><b>Warning:</b> Unlike {@code Multiset}, entries whose values are zero are not automatically
 * removed from the map. Instead they must be removed manually with {@link #removeAllZeros}.
 *

 *
 * <p><b>Note:</b> If your values are always positive and less than 2^31, you may wish to use a
 * {@link com.google.common.collect.Multiset} such as {@link
 * com.google.common.collect.ConcurrentHashMultiset} instead.
 *
 * <p><b>Warning:</b> Unlike {@code Multiset}, entries whose values are zero are not automatically
 * removed from the map. Instead they must be removed manually with {@link #removeAllZeros}.
 *