rate.limit.block.duration.ms=300000
# Retry-After header value in seconds.
rate.limit.retry.after.seconds=60
# Comma-separated list of whitelisted IPs (e.g., 127.0.0.1,::1).
rate.limit.whitelist.ips=127.0.0.1,::1
# Comma-separated list of blocked IPs.
rate.limit.blocked.ips=
# Comma-separated list of trusted proxy IPs. Only trust X-Forwarded-For/X-Real-IP from these IPs.
rate.limit.trusted.proxies=127.0.0.1,::1

        source.put("title", "Only");

        final String json = new JsonIndexExportFormatter().format(source, Collections.emptySet());

        assertTrue(json.contains("\"title\": \"Only\""));
        // No comma should appear with single field
        assertFalse(json.contains(","));
    }

    @Test
    public void test_jsonFormatter_booleanFalse() {
        final Map<String, Object> source = new LinkedHashMap<>();