public Properties getProperties()
    {
        return properties;
    }
@Test(expectedExceptions = SQLException.class)
    public void assertNonAlphanumericClientTags()
            throws SQLException
    {
        String clientTags = "d1,@d2,d3";
        PrestoDriverUri parameters = createDriverUri("presto://localhost:8080?clientTags=" + clientTags);
        Properties properties = parameters.getProperties();
        assertEquals(properties.getProperty(CLIENT_TAGS.getKey()), clientTags);
    }