protected InternalDistributedSystem createConnection(String[] roles) {
    StringBuilder rolesValue = new StringBuilder();
    if (roles != null) {
      for (int i = 0; i < roles.length; i++) {
        if (i > 0) {
          rolesValue.append(",");
        }
        rolesValue.append(roles[i]);
      }
    }
    Properties config = new Properties();
    config.setProperty(ROLES, rolesValue.toString());
    return getSystem(config);
  }
Returns scope to execute tests under.
geode-core/src/distributedTest/java/org/apache/geode/cache30/RegionReliabilityTestCase.java