default long getWriteBufferPeriodicFlushTimerTickMs() {
    throw new UnsupportedOperationException(
      "The BufferedMutator::getWriteBufferPeriodicFlushTimerTickMs has not been implemented");
  }
Returns the current periodic flush timertick interval in milliseconds.
@return The number of milliseconds between each check if the timeout has been exceeded. This
        value only has a real meaning if the timeout has been set to > 0
hbase-client/src/main/java/org/apache/hadoop/hbase/client/BufferedMutator.java