private void registerRegex(final String regionName, final String regex) {
    Region<Integer, Object> region = clientCache.getRegion(regionName);
    region.registerInterestRegex(regex);
  }
Register list of keys on given region
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/RegisterInterestServerMetaDataDistributedTest.java