}
      return this;
    }

    @CanIgnoreReturnValue
    public Builder<K, V> putAll(Map<? extends K, ? extends V> map) {
      return putAll(map.entrySet());
    }

    @CanIgnoreReturnValue
    public Builder<K, V> putAll(Iterable<? extends Entry<? extends K, ? extends V>> entries) {
      for (Entry<? extends K, ? extends V> entry : entries) {
        put(entry);

     * the last value put for that key.
     *
     * @throws NullPointerException if any key or value in {@code map} is null
     */
    @CanIgnoreReturnValue
    public Builder<K, V> putAll(Map<? extends K, ? extends V> map) {
      return putAll(map.entrySet());
    }

    /**
     * Adds all of the given entries to the built map. If the same key is put more than once, {@link

     * the last value put for that key.
     *
     * @throws NullPointerException if any key or value in {@code map} is null
     */
    @CanIgnoreReturnValue
    public Builder<K, V> putAll(Map<? extends K, ? extends V> map) {
      return putAll(map.entrySet());
    }

    /**
     * Adds all of the given entries to the built map. If the same key is put more than once, {@link