https://git.liox.eu/pczajkowski/ExcelORM/src/a7f665c29705ace5b2ba93e86323de2020c8fb79/ExcelORM/ExcelORM/Mapping.cs#L14
Done.
https://git.liox.eu/pczajkowski/ExcelORM/src/a7f665c29705ace5b2ba93e86323de2020c8fb79/ExcelORM/ExcelORM/Mapping.cs#L14
Done.