refreshToken 
  open fun refreshToken(refreshToken: String, oauthSettings: OAuthSettings, accessTokenCallback: OAuthProvider.AccessTokenCallback)
Use refresh token to get new access token
Parameters
refreshToken 
: refresh token of user to refresh
oauthSettings 
: OauthSetting containing client details needed for OAuth flow
accessTokenCallback  
: Access Token Callback, onSuccess will return User Token Session + OnFailure will return Auth code + message
abstract fun refreshToken(refreshToken: String, oauthSettings: OAuthSettings, accessTokenCallback: OAuthProvider.AccessTokenCallback, callbackScope: CoroutineScope)