/**
   * Verifies that {@code rowKey}, {@code columnKey} and {@code value} are non-null, and returns a
   * new entry with those values.
   */
  static <R, C, V> Cell<R, C, V> cellOf(R rowKey, C columnKey, V value) {
    return Tables.immutableCell(
        checkNotNull(rowKey, "rowKey"),
        checkNotNull(columnKey, "columnKey"),
        checkNotNull(value, "value"));
  }

  /**

     * @param value the data to associate with the key, may be {@code null} to remove the mapping
     */
    <T> void set(@Nonnull Key<T> key, @Nullable T value);

    /**
     * Associates the specified session data with the given key if the key is currently mapped to the given value. This
     * method provides an atomic compare-and-update of some key's value.
     *

        private final String value;

        NamedImpl(String value) {
            this.value = value;
        }

        public String value() {
            return this.value;
        }

        @SuppressWarnings("checkstyle:MagicNumber")
        public int hashCode() {
            return 127 * "value".hashCode() ^ this.value.hashCode();
        }

  /**
   * The map does not throw {@code NullPointerException} on calls such as {@code
   * containsValue(null)}, {@code values().contains(null)} or {@code values().remove(null)}.
   */
  ALLOWS_NULL_VALUE_QUERIES,
  ALLOWS_NULL_VALUES(ALLOWS_NULL_VALUE_QUERIES),
  /**
   * The map does not throw {@code NullPointerException} on calls such as {@code
   * entrySet().contains(null)} or {@code entrySet().remove(null)}
   */
  ALLOWS_NULL_ENTRY_QUERIES,

      super(size);
    }

    /**
     * Associates {@code key} with {@code value} in the built bimap. Duplicate keys or values are
     * not allowed, and will cause {@link #build} to fail.
     */
    @CanIgnoreReturnValue
    @Override
    public Builder<K, V> put(K key, V value) {
      super.put(key, value);
      return this;
    }

    /**

    ms.add("a", Integer.MAX_VALUE);
    ms.add("b", Integer.MAX_VALUE);
    ms.add("c", 3);

    assertEquals(Integer.MAX_VALUE, ms.count("a"));
    assertEquals(Integer.MAX_VALUE, ms.count("b"));
    assertEquals(3, ms.count("c"));

    assertEquals(Integer.MAX_VALUE, ms.headMultiset("c", CLOSED).size());
    assertEquals(Integer.MAX_VALUE, ms.headMultiset("b", CLOSED).size());

     *
     * @param field
     *            フィールド。{@literal null}であってはいけません
     * @param value
     *            {@literal static}フィールドの新しい値
     * @throws IllegalAccessRuntimeException
     *             基本となるフィールドにアクセスできない場合
     * @see Field#set(Object, Object)
     */
    public static void set(final Field field, final Object value) throws IllegalAccessRuntimeException {
        assertArgumentNotNull("field", field);

   * over.
   */
  private static class Composite<T extends @Nullable Object> implements Comparable<Composite<T>> {
    final T value;
    final int rank;

    Composite(T value, int rank) {
      this.value = value;
      this.rank = rank;
    }

    // natural order is by rank only; the test will compound() this with the
    // order of 't'.
    @Override

   * over.
   */
  private static class Composite<T extends @Nullable Object> implements Comparable<Composite<T>> {
    final T value;
    final int rank;

    Composite(T value, int rank) {
      this.value = value;
      this.rank = rank;
    }

    // natural order is by rank only; the test will compound() this with the
    // order of 't'.
    @Override

      Entry<K, V> nefariousMapEntry(K key, V value) {
    return new Entry<K, V>() {
      @Override
      public K getKey() {
        return key;
      }

      @Override
      public V getValue() {
        return value;
      }

      @Override
      public V setValue(V value) {
        throw new UnsupportedOperationException();
      }