By this section : #reciprocal-access-token
On below contents
[ When SmartThings receives an access token (obtained in an OAuth integration) from a third party, it sends a callback authentication
code as seen below. The third party can use this code to request callback access tokens.]
(1) Who is ‘third party’?
(2) When ‘third party’ send access token to ‘SmartThings’?
(3) Not need return for this interactionType(‘grantCallbackAccess’)?
Please, let me know. Thanks