public int addConditionalFormatting(CellRangeAddress[] regions,ConditionalFormattingRule rule1) {return addConditionalFormatting(regions,  (HSSFConditionalFormattingRule)rule1);}
public int AddConditionalFormatting(CellRangeAddress[] regions,HSSFConditionalFormattingRule rule1){return AddConditionalFormatting(regions,rule1 == null ? null : new HSSFConditionalFormattingRule[]{rule1});}