CBitrix24NetOAuthInterface::getStorageTokens

private function getStorageTokens()
{
	global $USER;

	$accessToken = '';
	if(is_object($USER) && $USER->IsAuthorized())
	{
		$dbSocservUser = UserTable::getList([
			'filter' => [
				'=USER_ID' => $USER->GetID(),
				'=EXTERNAL_AUTH_ID' => CSocServBitrix24Net::ID
			],
			'select' => ["USER_ID", "OATOKEN", "OATOKEN_EXPIRES", "REFRESH_TOKEN"]
		]);

		$accessToken = $dbSocservUser->fetch();
	}
	return $accessToken;
}