@Test
  public void testLazyMapNestedExceedLimit() throws Throwable {
    //map max nesting level is one less because it uses an additional separator
    checkExtendedLimitExceeded(EXTENDED_LEVEL_THRESHOLD - 1, ObjectInspector.Category.MAP);
  }
Test the LazyMap class with multiple levels of nesting
serde/src/test/org/apache/hadoop/hive/serde2/lazy/TestLazyArrayMapStruct.java