The LinkedIn provider returns access_token key and secret. But the Linkedin api works with a single oauth access_token of about 500 characters long, which is used like this:
GET /v1/people/~ HTTP/1.1
Authorization: Bearer AQXdSP_W41_UPs5ioT_t8HESyODB4FqbkJ8LrV_5mff4gPODzOYR
There's no mention in the LinkedIn api docs about a key and secret as returned by oneall provider api.
So how to use the value returned by Oneall? Or, how to get a real access_token from Oneall?