@Test
public void duplicateKeysInMultimap() {

  String json = "[ {'foo':1, 'foo':2} ]";
  
  MultimapRecord record = JsonRecords.parseAsMultimap(json).get(0);
  
  Collection<RecordValue<?>> values = record.get(Column.create("foo"));
  Assert.assertEquals(1, values.size());
  Assert.assertEquals(2, values.iterator().next().value());
}