/// <summary>
 /// Creates and fill in ITEM_IS_EXIST_TABLE for counting support of S-Step candidates.
 /// </summary>
 private void CreateAndFillInItemIsExistTable()
 {
     _itemIsExistTable = new ItemIsExistTable(_remappedSequenceDatabase, _minSupport);
     _itemIsExistTable.FillTable();
 }
 /// <summary>
 /// Creates and fill in ITEM_IS_EXIST_TABLE for counting support of S-Step candidates. 
 /// </summary>
 private void CreateAndFillInItemIsExistTable()
 {
   _itemIsExistTable = new ItemIsExistTable(_remappedSequenceDatabase, _minSupport);
   _itemIsExistTable.FillTable();
 }