We are in the process of migrating these examples over to newrelic-node-examples as more robust applications. If you are looking for the api/background-transactions, api/distributed-tracing, or api/segments examples, they are now here as stand-alone applications.
The shim subdirectory and its revised contents will also be moved over to newrelic-node-examples at a later date.
To request additional examples, please file an issue!