// Exists only for hierarchy mapping; no members.
  }

  private interface HierarchyFixtureSubinterface extends HierarchyFixtureInterface {
    // Exists only for hierarchy mapping; no members.
  }

  private static class HierarchyFixtureParent implements HierarchyFixtureSubinterface {
    // Exists only for hierarchy mapping; no members.
  }

    // Exists only for hierarchy mapping; no members.
  }

  private interface HierarchyFixtureSubinterface extends HierarchyFixtureInterface {
    // Exists only for hierarchy mapping; no members.
  }

  private static class HierarchyFixtureParent implements HierarchyFixtureSubinterface {
    // Exists only for hierarchy mapping; no members.
  }

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

/*
 * Source:
 * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/jsr166e/LongAdder.java?revision=1.17
 */

package com.google.common.hash;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

/*
 * Source:
 * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/jsr166e/LongAdder.java?revision=1.17
 */

package com.google.common.cache;

import com.google.common.annotations.GwtCompatible;
import java.io.IOException;

/*
 * Written by Doug Lea and Martin Buchholz with assistance from
 * members of JCP JSR-166 Expert Group and released to the public
 * domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

/*
 * Source:
 * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/test/tck-jsr166e/AtomicDoubleTest.java?revision=1.8
 * (Modified to adapt to guava coding conventions)
 */

package com.google.common.util.concurrent;

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

/*
 * Source:
 * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/jsr166e/LongAdder.java?revision=1.17
 */

package com.google.common.cache;

import com.google.common.annotations.GwtCompatible;
import java.io.IOException;

/*
 * Written by Doug Lea and Martin Buchholz with assistance from
 * members of JCP JSR-166 Expert Group and released to the public
 * domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

/*
 * Source:
 * http://gee.cs.oswego.edu/cgi-bin/viewcvs.cgi/jsr166/src/jsr166e/extra/AtomicDouble.java?revision=1.13
 * (Modified to adapt to guava coding conventions and
 * to use AtomicLong instead of sun.misc.Unsafe)
 */

  }

  @J2ktIncompatible
  @GwtIncompatible // Only used by @GwtIncompatible code
  private static class MultisetHolder implements Serializable {
    public Multiset<?> member;

    MultisetHolder(Multiset<?> multiset) {
      this.member = multiset;
    }

    private static final long serialVersionUID = 1L;
  }

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester

      }
    }
  }

  /**
   * Used to delay string formatting until actually required, as it otherwise shows up in the test
   * execution profile when running an extremely large numbers of tests.
   */
  private String reportContext(List<E> expected) {
    return Platform.format(
        "expected collection %s; actual collection %s", expected, this.collection);
  }

        .addEqualityGroup(isNull)
        .addEqualityGroup(Equivalence.identity().equivalentTo("1"))
        .testEquals();
  }

  /*
   * We use large numbers to avoid the integer cache. Normally, we'd accomplish that merely by using
   * `new Integer` (as we do) instead of `Integer.valueOf`. However, under J2KT, `new Integer`