listOffersAndFolders

List<WSComponentOrFolderInfo> 
    listOffersAndFolders(String userCredential, String partitionName, 
        Locale requestedLocale, 
        WSReference parentReference) 
    throws CampaignServicesException; 

List all the offers, offer lists, and folders under the optional parent folder.

After retrieved, each WSComponentOrFolderInfo instance that is returned can be used as is, for example to display the next level of the folder hierarchy, the attribute APIs can be used to fetch or update any contained offers.