protected boolean stopProcessing(CellWriteHandlerContext context) {
        if (context.getFirstCellData() == null) {
            return true;
        }
        return context.getHeadData() == null;
    }
Returns the column width corresponding to each column head

@param head Nullable
@return
fastexcel-core/src/main/java/cn/idev/excel/write/style/AbstractVerticalCellStyleStrategy.java