*/
@GwtCompatible
@ElementTypesAreNonnullByDefault
@SuppressWarnings("Java7ApiChecker")
@IgnoreJRERequirement // Users will use this only if they're already using streams.
public final class MoreCollectors {

  /*
   * TODO(lowasser): figure out if we can convert this to a concurrent AtomicReference-based
   * collector without breaking j2cl?
   */

 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.collect.MoreCollectors.onlyElement;
import static com.google.common.collect.MoreCollectors.toOptional;
import static com.google.common.collect.ReflectionFreeAssertThrows.assertThrows;
import static com.google.common.truth.Truth.assertThat;

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.collect.MoreCollectors.onlyElement;

import com.google.caliper.BeforeExperiment;
import com.google.caliper.Benchmark;
import com.google.caliper.Param;
import com.google.caliper.api.SkipThisScenarioException;
import java.util.ArrayList;