public Properties getProperties()
    {
        return properties;
    }
@Test
    public void testUriWithCustomHeaders()
            throws SQLException, UnsupportedEncodingException
    {
        String customHeaders = "testHeaderKey:testHeaderValue";
        String encodedCustomHeaders = URLEncoder.encode(customHeaders, StandardCharsets.UTF_8.toString());
        PrestoDriverUri parameters = createDriverUri("presto://localhost:8080?customHeaders=" + encodedCustomHeaders);
        Properties properties = parameters.getProperties();
        assertEquals(properties.getProperty(CUSTOM_HEADERS.getKey()), customHeaders);
    }