You're seeing just the function paginate, go back to Forage.Paginator module for more information.
Link to this function

paginate(params, schema, repo, options, repo_opts \\ [])

Build properly paginated Ecto queries from a set of parameters.

Requires a repo with a paginate/2 function. The easiest way of having a compliant repo is to use Paginator, ... inside your Repo.