Explain why we use the mapper's getTalkById()
Explain why we use the mapper's getTalkById()

Add a comment to explain why we don't want an 404 error when deleting a
talk.

joindin/joindin-api,asgrim/joindin-api,lornajane/joindin-api,lornajane/joindin-api,railto/joindin-api,dstockto/joindin-api,phoenixrises/joindin-api,phoenixrises/joindin-api,phoenixrises/joindin-api,asgrim/joindin-api,dstockto/joindin-api,heiglandreas/joindin-api,railto/joindin-api,joindin/joindin-api,heiglandreas/joindin-api,heiglandreas/joindin-api,joindin/joindin-api,akrabat/joindin-api,akrabat/joindin-api,railto/joindin-api,dstockto/joindin-api,akrabat/joindin-api,asgrim/joindin-api,lornajane/joindin-api