Page 37 Collections unclear use of method create

On page 37 the example uses:

// Collection's convenience method used to create
// new model instance within collection itself.
todos.create({title:'Try out code examples', id: 48});

I'm assuming that this adds a new model instance to the collection but, I'm guessing this example is not clear.

If so explaining the use of the create function and its expected input would be quite valuable.