public static void unsetJavaSystemProperties(Properties javaSystemProperties) {
    if (javaSystemProperties != null && javaSystemProperties.size() > 0) {
      Enumeration<?> e = javaSystemProperties.propertyNames();

      while (e.hasMoreElements()) {
        String key = (String) e.nextElement();
        System.clearProperty(key);
      }
    }
  }
@deprecated Please use {@link DistributedRule} and Geode User APIs or {@link ClusterStartupRule}
            instead.
geode-dunit/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheServerTestUtil.java