Describe the bug
I was trying to implement the example given in chapter 15 -> notebook-rag-vector-databases.ipynb

I can see we are connecting to cosmos database and container but at the end of the script no any data is getting inserted into container / database. In this vector database sample code when its going to retrieve / insert data from cosmos database ?

If it's not inserting in database? then what's the use of cosmos DB here?

Expected behavior
My assumption is it should insert data in cosmos db. Which is not happening in this code.