public int addConditionalFormatting(CellRangeAddress[] regions,ConditionalFormattingRule rule1) {return addConditionalFormatting(regions,  (HSSFConditionalFormattingRule)rule1);}
public int AddConditionalFormatting(CellRangeAddress[] regions,IConditionalFormattingRule rule1){return AddConditionalFormatting(regions, (HSSFConditionalFormattingRule)rule1);}