Oban.Repo.delete_all

You're seeing just the function delete_all, go back to Oban.Repo module for more information.
Link to this function

delete_all(conf, queryable, opts \\ [])

View Source (since 2.2.0)

Specs

delete_all(config(), Ecto.Queryable.t(), Keyword.t()) ::
  {integer(), nil | [term()]}

Wraps Ecto.Repo.delete_all/2.