HRESULT XblUserStatisticsGetMultipleUserStatisticsAsync(  
         XblContextHandle xblContextHandle,  
         uint64_t* xboxUserIds,  
         size_t xboxUserIdsCount,  
         const char* serviceConfigurationId,  
         const char** statisticNames,  
         size_t statisticNamesCount,  
         XAsyncBlock* async  
)