/**
   * Stores all key-value pairs of {@code multimap} in this multimap, in the order returned by
   * {@code multimap.entries()}.
   *
   * @return {@code true} if the multimap changed
   */
  @CanIgnoreReturnValue
  boolean putAll(Multimap<? extends K, ? extends V> multimap);

  /**

import java.util.Collections;
import java.util.List;
import javax.annotation.CheckForNull;
import org.checkerframework.checker.nullness.qual.Nullable;

/** Aggregate future that collects (stores) results of each future. */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
abstract class CollectionFuture<V extends @Nullable Object, C extends @Nullable Object>
    extends AggregateFuture<V, C> {
  /*

          double z = aa.getAndAccumulate(i, y, Double::sum);
          assertBitEquals(x, z);
          assertBitEquals(x + y, aa.get(i));
        }
      }
    }
  }

  /** getAndAccumulate with max stores max of given value to current, and returns previous value */
  public void testGetAndAccumulateWithMax() {
    AtomicDoubleArray aa = new AtomicDoubleArray(SIZE);
    for (int i : new int[] {0, SIZE - 1}) {

  }

  @Override
  public boolean containsValue(@CheckForNull Object value) {
    return values().contains(value);
  }

  // Modification Operations

  /**
   * Stores a key-value pair in the multimap.
   *
   * @param key key to store in the multimap
   * @param value value to store in the multimap
   * @return {@code true} always
   */
  @CanIgnoreReturnValue
  @Override

      extends AbstractBiMap<K, V> {
    Inverse(Map<K, V> backward, AbstractBiMap<V, K> forward) {
      super(backward, forward);
    }

    /*
     * Serialization stores the forward bimap, the inverse of this inverse.
     * Deserialization calls inverse() on the forward bimap and returns that
     * inverse.
     *
     * If a bimap and its inverse are serialized together, the deserialized

      for (Entry<? extends K, ? extends V> entry : entries) {
        put(entry);
      }
      return this;
    }

    /**
     * Stores a collection of values with the same key in the built multimap.
     *
     * @throws NullPointerException if {@code key}, {@code values}, or any element in {@code values}

      for (Entry<? extends K, ? extends V> entry : entries) {
        put(entry);
      }
      return this;
    }

    /**
     * Stores a collection of values with the same key in the built multimap.
     *
     * @throws NullPointerException if {@code key}, {@code values}, or any element in {@code values}

// Since this class only needs CAS on one field, we can avoid this bug by extending AtomicReference
// instead of using an AtomicReferenceFieldUpdater. This reference stores Thread instances
// and DONE/INTERRUPTED - they have a common ancestor of Runnable.
abstract class InterruptibleTask<T extends @Nullable Object>
    extends AtomicReference<@Nullable Runnable> implements Runnable {
  static {

      extends AbstractBiMap<K, V> {
    Inverse(Map<K, V> backward, AbstractBiMap<V, K> forward) {
      super(backward, forward);
    }

    /*
     * Serialization stores the forward bimap, the inverse of this inverse.
     * Deserialization calls inverse() on the forward bimap and returns that
     * inverse.
     *
     * If a bimap and its inverse are serialized together, the deserialized

    this.elements = null;
    incrementModCount();
    return newDelegate;
  }

  @VisibleForTesting
  boolean isUsingHashFloodingResistance() {
    return delegateOrNull() != null;
  }

  /** Stores the hash table mask as the number of bits needed to represent an index. */
  private void setHashTableMask(int mask) {
    int hashTableBits = Integer.SIZE - Integer.numberOfLeadingZeros(mask);
    metadata =