The Json value is not probably documented

[zarubto4]

The documentation says that the answer for GET Token return this Json.
{ "token_type":"bearer", "access_token":"AAAnu...........3YnNmbWVSD7p", "expires_in":1800 }

But Return this Json.

{ "token_type": "bearer", "access_token": "6RY6R6r.........6us=", "expires_in": 1800, "refresh_token": "kWXv4bNE8V........XiMzO9X5qxf4=" }

Fix Code or Documentation. (Probably write documentation for refresh Token