public int getLastInternalSheetIndexForExtIndex(int extRefIndex) {if (extRefIndex >= _externSheetRecord.getNumOfRefs() || extRefIndex < 0) {return -1;}return _externSheetRecord.getLastSheetIndexFromRefIndex(extRefIndex);}

public int GetLastInternalSheetIndexForExtIndex(int extRefIndex){if (extRefIndex >= _externSheetRecord.NumOfRefs || extRefIndex < 0){return -1;}return _externSheetRecord.GetLastSheetIndexFromRefIndex(extRefIndex);}
