/**
* Create an Add Contacts Activity from a file. Valid file types are txt, csv, xls, xlsx
* @param string $accessToken - Constant Contact OAuth2 access token
* @param string $fileName - The name of the file (ie: contacts.csv)
* @param string $contents - The contents of the file
* @param string $lists - Comma separated list of ContactList id's to add the contacts to
* @return Activity
*/
public function addCreateContactsActivityFromFile($accessToken, $fileName, $contents, $lists)
{
return $this->activityService->createAddContactsActivityFromFile($accessToken, $fileName, $contents, $lists);
}
