private static String aclConfiguration(String token) {
        return new StringBuilder()
                .append('{')
                .append("  \"acl\": {")
                .append("    \"enabled\": true, ")
                .append("    \"default_policy\": \"deny\", ")
                .append("    \"down_policy\": \"deny\", ")
                .append("    \"tokens\": {")
                .append("      \"agent\": \"").append(token).append("\", ")
                .append("      \"initial_management\": \"").append(token).append('"')
                .append("    }")
                .append("  }")
                .append('}')
                .toString();
    }
A helper class for testing with Consul.
consul/src/test/java/com/linecorp/armeria/internal/consul/ConsulTestBase.java