default WriteCellData<?> convertToExcelData(WriteConverterContext<T> context) throws Exception {
        return convertToExcelData(context.getValue(), context.getContentProperty(),
            context.getWriteContext().currentWriteHolder().globalConfiguration());
    }
Convert Java objects to excel objects

@param context write context
@return Data to put into a Excel
@throws Exception Exception.
fastexcel-core/src/main/java/cn/idev/excel/converters/Converter.java