public List<String> getAllColumnsDataTypes() {
    List<String> columnDataTypes = new ArrayList<>();
    if (_columnDataTypesArray == null) {
      return columnDataTypes;
    }

    for (JsonNode columnDataType : _columnDataTypesArray) {
      columnDataTypes.add(columnDataType.textValue());
    }

    return columnDataTypes;
  }
@Test
  public void testGetAllColumnsDataTypes() {
    // Run the test
    final List<String> result = _resultTableResultSetUnderTest.getAllColumnsDataTypes();

    // Verify the results
    assertNotNull(result);
    assertEquals(2, result.size());
  }