Get rule data with no filters

BizRightsPublishingFramework.PublishingWebServices objMyImplementation = new 
BizRightsPublishingFramework.PublishingWebServices();
BizRightsPublishingFramework.IBizObjectCollection objBizObjectsDataCol = new 
BizRightsPublishingFramework.IBizObjectCollection();
BizRightsPublishingFramework.SearchCriteria objSearchData = new 
BizRightsPublishingFramework.SearchCriteria();
objBizObjectsDataCol = objMyImplementation.GetObjectData(objAuthInfo, 
BizRightsPublishingFramework.ObjectType.Rule, null, 
BizRightsPublishingFramework.SearchType.Containing, objSearchData);