private void writeConfiguration(List<String> lines) throws IOException {
        Files.write(jaasConfigFile.toPath(), lines, StandardCharsets.UTF_8);
        Configuration.setConfiguration(null);
    }
Tests parsing of {@link SaslConfigs#SASL_JAAS_CONFIG} property and verifies that the format
and parsing are consistent with JAAS configuration files loaded by the JRE.
clients/src/test/java/org/apache/kafka/common/security/JaasContextTest.java