Add reference to productType to the lineitem (#113)
Add reference to productType to the lineitem (#113)

* Add reference to productType to the lineitem

* Revert AddLineItemAction.cs

* Revert LineItemDraft.cs

Co-authored-by: Jens Schulze <31278df03d227e39957774224d455991f4889009@gmail.com>
commercetools/commercetools-dotnet-sdk