captionAsset.serveByEntryId action C#

In a C# project, I am trying to import the caption files for a particular entry. I’m referencing the Kaltura Services namespace, which includes a number of actions for the captionAsset service, but the serve and serveByEntryId actions are missing. I’ve also confirmed that on GitHub ( the actions are not included in the project.

When using the Kaltura developer console, however, the serveByEntryId action works:

Any ideas on why these particular actions are not included in the C# Client API?