code: public long getMaxTime(final TimeUnit timeUnit) {
          notNull("timeUnit", timeUnit);
          return timeUnit.convert(maxTimeMS, TimeUnit.MILLISECONDS);
      }
docs: Gets the maximum execution time on the server for this operation.  The default is 0, which places no limit on the execution time.
  
  @param timeUnit the time unit to return the result in
  @return the maximum execution time in the given time unit
  @mongodb.driver.manual reference/operator/meta/maxTimeMS/ Max Time