A lot of information can be gathered from the Controller using little-used functions like:

Phoenix.Controller.current_path(conn),

Phoenix.Router.route_info(
conn.private[:phoenix_router],
conn.method,
conn.request_path,
conn.host
),

Phoenix.Controller.action_name(conn), or

__ENV__.function()

But I do not find one that gives me the path function created by the Router. Is there a way to get it back?. For example, given:
"/api/v1/pages/:id"
get
api_v1_page_path
or
Routes.api_v1_page_path
or
{Routes, :api_v1_page_path, arity_something}

Thanks in advance.