3.2.5.2.1.2 Response Body
The format of the response body is defined in [RFC6749] sections 4.1.4 (Access Token Response) and 5 (Issuing an Access Token), and in [RFC8628] section 3.5 (Device Access Token Response).
In addition to the response parameters defined in [RFC6749] and [RFC8628], the server can also send the following response parameters:
resource: OPTIONAL. See sections 2.2.3 and 2.2.3.3.2.
x5c: OPTIONAL. See sections 2.2.3 and 2.2.3.7.