private long getNextIntervalSynchronizedAbsoluteTime(final long currentTime,
        final long pollInterval) {
      return (currentTime - (currentTime % pollInterval)) + pollInterval;
    }
This function calculates next interval absolute time that is same on all servers in
the cluster if following conditions are fulfilled:
- same pollInterval value is used
- time is synchronized on servers

@return absolute time of next interval
geode-core/src/main/java/org/apache/geode/cache/server/internal/LoadMonitor.java