code: public boolean isDataModified() {
  		if (this.deletedRecords.size() > 0) {
  			return true;
  		}
  		for (final JKTableRecord rec : this.records) {
  			if (rec.getStatus() == RecordStatus.MODIFIED) {
  				return true;
  			}
  		}
  		return false;
  	}
docs: /////////////////////////////////////////////////////////