static void testGetDatetimeValue()
        {
            JSONParse parser = new JSONParse("\"2011-03-22T13:01:23\"");

            System.assertEquals(Datetime.newInstanceGmt(2011, 3, 22, 13, 1, 23), parser.getDatetimeValue());
            parser = new JSONParse("1538783039073");
            System.assertEquals(Datetime.newInstanceGmt(2018, 10, 05, 23, 43, 59), parser.getDatetimeValue());
            try
            {
                parser = new JSONParse("[1,2,3]");
                parser.getDatetimeValue();
                System.assert(false, "Node is not a valid Datetime, should have seen an exception about that.");
            }
            catch (JSONParse.InvalidConversionException e)
            {
                System.assertEquals("Only Long and String values can be converted to a Datetime: [ 1, 2, 3 ]", e.getMessage());
            }
        }