checkArgument(columnIndex != null, "Column %s not in %s", columnKey, columnList);
    return set(rowIndex, columnIndex, value);
  }

  /*
   * TODO(jlevy): Consider creating a merge() method, similar to putAll() but
   * copying non-null values only.
   */

  /**
   * {@inheritDoc}
   *
   * <p>If {@code table} is an {@code ArrayTable}, its null values will be stored in this table,

    // lower bound in the merge range is entirely contained by the merge range.
    Set<Entry<Cut<K>, RangeMapEntry<K, V>>> entriesInMergeRange =
        entriesByLowerBound.subMap(range.lowerBound, range.upperBound).entrySet();

    // Create entries mapping any unmapped ranges in the merge range to the specified value.

       * running under Jelly Bean or higher. But it seems safest to check.
       */
      if (version < jellyBean) {
        return new ThrowingCreator();
      }

      // Don't merge these catch() blocks, let alone use ReflectiveOperationException directly:
      // b/65343391
    } catch (NoSuchFieldException e) {
      // The JELLY_BEAN field doesn't exist because we're running on a version before Jelly Bean :)

   *
   * @since 28.2
   */
  public void addAll(StatsAccumulator values) {
    if (values.count() == 0) {
      return;
    }
    merge(values.count(), values.mean(), values.sumOfSquaresOfDeltas(), values.min(), values.max());
  }

  private void merge(
      long otherCount,
      double otherMean,
      double otherSumOfSquaresOfDeltas,
      double otherMin,
      double otherMax) {

import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutionException;
import junit.framework.TestCase;

/**
 * Test suite for {@link CacheBuilder}. TODO(cpovirk): merge into CacheBuilderTest?
 *
 * @author Jon Donovan
 */
@GwtCompatible
public class CacheBuilderGwtTest extends TestCase {

  private FakeTicker fakeTicker;

  @Override

      this.mergeFunction = mergeFunction;
    }

    void put(K key, V value) {
      if (map == null) {
        map = new EnumMap<>(singletonMap(key, value));
      } else {
        map.merge(key, value, mergeFunction);
      }
    }

    EnumMapAccumulator<K, V> combine(EnumMapAccumulator<K, V> other) {
      if (this.map == null) {
        return other;
      } else if (other.map == null) {

   * @deprecated Unsupported operation.
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  @CheckForNull
  public final V merge(
      K key, V value, BiFunction<? super V, ? super V, ? extends @Nullable V> function) {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the map unmodified.

   * and values are the result of applying the provided mapping functions to the input elements.
   *
   * <p>If the mapped keys contain duplicates (according to {@link Object#equals(Object)}), the
   * values are merged using the specified merging function. If the merging function returns {@code
   * null}, then the collector removes the value that has been computed for the key thus far (though
   * future occurrences of the key would reinsert it).

    Iterator<C> merged =
        mergeSorted(
            transform(backingMap.values(), (Map<C, V> input) -> input.keySet().iterator()),
            comparator);

    return new AbstractIterator<C>() {
      @CheckForNull C lastValue;

      @Override
      @CheckForNull
      protected C computeNext() {
        while (merged.hasNext()) {
          C next = merged.next();

     * and will be merged, but overlapping ranges will cause an exception when {@link #build()} is
     * called.
     */
    @CanIgnoreReturnValue
    public Builder<C> addAll(RangeSet<C> ranges) {
      return addAll(ranges.asRanges());
    }

    /**
     * Add all of the specified ranges to this builder. Adjacent ranges are permitted and will be