svoid test_SortedArrayBasedMap() {
  Map map = SortedArrayBasedMap(litmap("hello" := "world", "a" := "b"));
  printStruct(map);
  assertEqualsVerbose("b", map.get("a"));
  assertEqualsVerbose("world", map.get("hello"));
  assertEqualsVerbose(2, map.entrySet().size());
}