Warlock.Controller.by_id

You're seeing just the callback by_id, go back to Warlock.Controller module for more information.
Link to this callback

by_id(host, id)

(optional)

Specs

by_id(host :: String.t(), id :: String.t()) ::
  {:ok, Ecto.Schema.t()} | {:error, Ecto.Query.CastError.t()}