Stop or warn if a dataset doesn't exist?

[katrinleinweber]

Currently, the use-case of downloading many datasets via bacdive_ids is hampered by the fact that some have return Not found. Probably, because BacDive deleted them on their end and/or assigned them a different ID.

BacDiveR/R/retrieve_data.R

Lines 27 to 32 in 77eba96

	if (identical(payload$detail, "Not found"))
	{
	stop(
	"Your search returned no result, sorry. Please make sure that you provided a searchTerm, and specified the correct searchType. Please type '?retrieve_data' and read through the 'searchType' section to learn more."
	)
	}

could be changed to return a warning, an empty string, NULL, exactly Not found, etc. What would be most useful?

cc @jotech, @cameronmartino @ceb15: If you have an opinion or advice on this, it would be very welcome.