Phoenix.Router.routes/1 is the public function we are meant to be using here

lib/pleroma/web/router.ex

@@ -1003,9 +1003,8 @@ defmodule Pleroma.Web.Router do
     options("/*path", RedirectController, :empty)
   end
 
-  # TODO: Change to Phoenix.Router.routes/1 for Phoenix 1.6.0+
   def get_api_routes do
-    __MODULE__.__routes__()
+    Phoenix.Router.routes(__MODULE__)
     |> Enum.reject(fn r -> r.plug == Pleroma.Web.Fallback.RedirectController end)
     |> Enum.map(fn r ->
       r.path