multimap = LinkedHashMultimap.create();
        multimap.putAll("foo", asList(2, 3, 4));
        multimap.putAll("bar", asList(5, 6));
        multimap.putAll("foo", asList(7, 8));
        return multimap.get("foo").iterator();
      }

      @Override
      protected void verify(List<Integer> elements) {
        assertEquals(new HashSet<>(elements), multimap.get("foo"));
      }

    checkConcurrencyLevel(2, 2);
    checkConcurrencyLevel(3, 4);
    checkConcurrencyLevel(4, 4);
    checkConcurrencyLevel(5, 8);
    checkConcurrencyLevel(6, 8);
    checkConcurrencyLevel(7, 8);
    checkConcurrencyLevel(8, 8);
  }

  private static void checkConcurrencyLevel(int concurrencyLevel, int segmentCount) {
    MapMakerInternalMap<Object, Object, ?, ?> map =

    checkConcurrencyLevel(2, 2);
    checkConcurrencyLevel(3, 4);
    checkConcurrencyLevel(4, 4);
    checkConcurrencyLevel(5, 8);
    checkConcurrencyLevel(6, 8);
    checkConcurrencyLevel(7, 8);
    checkConcurrencyLevel(8, 8);
  }

  private static void checkConcurrencyLevel(int concurrencyLevel, int segmentCount) {
    MapMakerInternalMap<Object, Object, ?, ?> map =

    assertThrows(IllegalArgumentException.class, () -> bazList.add(5));
    assertThrows(IllegalArgumentException.class, () -> bazList.add(0, 6));
    assertThrows(IllegalArgumentException.class, () -> bazList.addAll(ImmutableList.of(7, 8)));
    assertThrows(IllegalArgumentException.class, () -> bazList.addAll(0, ImmutableList.of(9, 10)));
  }

  @J2ktIncompatible
  @GwtIncompatible // NullPointerTester
  public void testNullPointers() {

  }

  public void testConcatVarargs() {
    List<Integer> list1 = newArrayList(1);
    List<Integer> list2 = newArrayList(4);
    List<Integer> list3 = newArrayList(7, 8);
    List<Integer> list4 = newArrayList(9);
    List<Integer> list5 = newArrayList(10);
    Iterable<Integer> result = Iterables.concat(list1, list2, list3, list4, list5);

    checkConcurrencyLevel(2, 2);
    checkConcurrencyLevel(3, 4);
    checkConcurrencyLevel(4, 4);
    checkConcurrencyLevel(5, 8);
    checkConcurrencyLevel(6, 8);
    checkConcurrencyLevel(7, 8);
    checkConcurrencyLevel(8, 8);
  }

  private static void checkConcurrencyLevel(int concurrencyLevel, int segmentCount) {
    LocalCache<Object, Object> map =

    checkConcurrencyLevel(2, 2);
    checkConcurrencyLevel(3, 4);
    checkConcurrencyLevel(4, 4);
    checkConcurrencyLevel(5, 8);
    checkConcurrencyLevel(6, 8);
    checkConcurrencyLevel(7, 8);
    checkConcurrencyLevel(8, 8);
  }

  private static void checkConcurrencyLevel(int concurrencyLevel, int segmentCount) {
    LocalCache<Object, Object> map =

    <magic priority="50">
      <match value="0x000002000210" type="string" offset="0">
      </match>
    </magic>
    <glob pattern="*.wb2"/>
  </mime-type>
  
  <!-- Quattro Pro for Windows 7-8 (wb3) and and 9 (qpw) files are
       currently detected by POIFSContainerDetector
  -->

  <mime-type type="application/xquery">
    <_comment>XQuery source code</_comment>
    <glob pattern="*.xq"/>