private String generateInitialXmlContent() {
    StringWriter sw = new StringWriter();
    PrintWriter pw = new PrintWriter(sw);
    CacheXmlGenerator.generateDefault(pw);
    return sw.toString();
  }
Creates a directory for this configuration if it doesn't already exist.
geode-core/src/main/java/org/apache/geode/distributed/internal/InternalConfigurationPersistenceService.java