Chapter 5 Question

[drdexter33]

On page 144 in chapter 5, at the bottom of the page it begins to explain how to implement the Seed Controller's task to put data in the db, however it's a bit confusing since the author discusses the attribute decorations here:

But skips over the implementation details for the method and moves on to the configuration setup block here:

By looking at the source code, I can see that the task implementation is done like this:

However the question I have is, would the author expect the reader to implicitly know this or is this an oversight by the author?

Thanks in advance..