@Override
  public void executeCqs(String regionName) throws CqException {
    preOp();
    try {
      ((DefaultQueryService) realQueryService).getCqService()
          .executeCqs(Arrays.asList(getCqs(regionName)));
    } catch (CqException cqe) {
      if (logger.isDebugEnabled()) {
        logger.debug("Unable to execute cqs on the specified region. Error: {}", cqe.getMessage(),
            cqe);
      }
    }
  }
A wrapper class over an actual QueryService instance. This is used when the
multiuser-authentication attribute is set to true.

@see ProxyCache
@since GemFire 6.5
geode-core/src/main/java/org/apache/geode/cache/query/internal/ProxyQueryService.java