OAuth Protocol Flow - Refresh Token
The refresh token grant type retrieves a new access token from a refresh token (emitted for a previous access token), when this previous access token is expired.
| Endpoint | Parameters | Response | 
|---|---|---|
/oauth2.0/accessToken | 
      grant_type=refresh_token&client_id=<ID>&client_secret=SECRET&refresh_token=REFRESH_TOKEN | 
      The new access token. |