Google has updated the client libraries and code examples for the new Google Ads API version 12, which was released a couple of weeks ago.
The code examples are on Github and include ApplyRecommendation.cs, DetectAndApplyRecommendations.cs, DismissRecommendation.cs and
GetTextAdRecommendations.cs. These were all added about 9 days ago.
I asked Ginny Marvin, the Google Ads Liaison, about what was new in this announcement and she clarified.
So if you want some updated code examples, Google now has you covered.
Forum discussion at Twitter.