filtered.put("a", 2);
    filtered.put("b", 4);
    assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered);

    Entry<String, Integer> entry = filtered.entrySet().iterator().next();
    assertThrows(IllegalArgumentException.class, () -> entry.setValue(5));

    assertEquals(ImmutableMap.of("a", 2, "b", 4), filtered);
  }

  public void testFilteredValuesClear() {

        impl.releaseBuffer(b);

        // Assert: original array is zeroed in-place
        for (byte value : b) {
            assertEquals(0, value, "Released buffer must be zeroed");
        }

        // Next get should return the same instance from cache
        byte[] reused = impl.getBuffer();
        assertSame(b, reused, "Buffer should be reused from cache");
        // And it should still be zeroed

      Iterator<Entry<K, Collection<V>>> asMapItr = multimap().asMap().entrySet().iterator();
      Collection<V> collection = null;
      while (asMapItr.hasNext()) {
        Entry<K, Collection<V>> asMapEntry = asMapItr.next();
        if (key.equals(asMapEntry.getKey())) {
          collection = asMapEntry.getValue();
          break;
        }
      }
      assertNotNull(collection);

        ConcurrentModificationException.class,
        () -> {
          Iterator<E> iterator = collection.iterator();
          assertTrue(collection.addAll(MinimalCollection.of(e3(), e0())));
          iterator.next();
        });
  }

  @CollectionFeature.Require(absent = SUPPORTS_ADD)
  @CollectionSize.Require(absent = ZERO)
  public void testAddAll_unsupportedAllPresent() {
    try {
      assertFalse(

      Iterator<Entry<K, Collection<V>>> asMapItr = multimap().asMap().entrySet().iterator();
      Collection<V> collection = null;
      while (asMapItr.hasNext()) {
        Entry<K, Collection<V>> asMapEntry = asMapItr.next();
        if (key.equals(asMapEntry.getKey())) {
          collection = asMapEntry.getValue();
          break;
        }
      }
      assertNotNull(collection);

     * @param access the desired access mode
     * @param shareAccess the share access mode
     * @param flags the open flags
     * @param fileAttributes the file attributes
     * @param andx the next command in the chain
     */
    public SmbComOpenAndX(final Configuration config, final String fileName, final int access, final int shareAccess, final int flags,
            final int fileAttributes, final ServerMessageBlock andx) {

     * @param b the data buffer containing bytes to write
     * @param off the offset in the buffer where data starts
     * @param len the number of bytes to write
     * @param andx the next command in the AndX chain, or null
     */
    public SmbComWriteAndX(final Configuration config, final int fid, final long offset, final int remaining, final byte[] b, final int off,

      @Override
      public boolean hasNext() {
        return (remaining > 0) || entryIterator.hasNext();
      }

      @Override
      public E next() {
        if (remaining <= 0) {
          Entry<E> entry = entryIterator.next();
          element = entry.getElement();
          remaining = entry.getCount();
        }
        remaining--;
        /*

            for (final CreateContextRequest createContext : this.createContexts) {
                final int structStart = dstIndex;

                SMBUtil.writeInt4(0, dst, structStart); // Next
                if (lastStart > 0) {
                    // set next pointer of previous CREATE_CONTEXT
                    SMBUtil.writeInt4(structStart - dstIndex, dst, lastStart);
                }

                dstIndex += 4;

    if (map.containsKey(key)) {
      // When a collision happens, the colliding entry is the first entry
      // of the tail map.
      Entry<K, V> previousEntry = map.tailMap(key).entrySet().iterator().next();
      throw new IllegalArgumentException(
          "Duplicate keys in mappings "
              + previousEntry.getKey()
              + "="
              + previousEntry.getValue()
              + " and "