@Test
void testMultimapObjectPropertyField() throws Exception {

  Map<String, List<Integer>> expectedMultimap =
      ImmutableMap.<String, List<Integer>>builder()
          .put("key1", ImmutableList.of(1))
          .put("key2", ImmutableList.of(2, 3, 4))
          .put("key3", ImmutableList.of(5))
          .build();
  TypedMultimapConfigClass instance = new TypedMultimapConfigClass();
  Field target = instance.getClass().getDeclaredField("integerMultimap");
  ObjectPropertyField fieldIntegerMultimap = new ObjectPropertyField(target, propName);
  fieldIntegerMultimap.applyValueParser(instance, "key1=1,key2=2,3,4,key3=5");
  assertEquals(expectedMultimap, instance.integerMultimap);
}