code: public long getRangeFrom() {
  		final long limit = (liveUpdated ? database.getStorage().getClusterDataRange(current.clusterId)[1] : firstClusterPosition) - 1;
  		if (rangeFrom > -1)
  			return Math.max(rangeFrom, limit);
  		return limit;
  	}
docs: Return the lower bound limit of the range if any, otherwise 0.
  
  @return