public static long getTime() {
    return java.lang.System.nanoTime();
  }
Return the time in nanoseconds since some arbitrary time in the past. The time rolls over to
zero every 2^64 nanosecs (approx 584 years). Interval computations spanning periods longer than
this will be wrong.
geode-core/src/main/java/org/apache/geode/internal/NanoTimer.java