question: @ SuppressWarnings ( "unchecked" ) public void awaitLastFut ( ) { FutureHolder holder = lastFut . get ( ) ; IgniteInternalFuture fut = holder . future ( ) ; if ( fut != null && ! fut . isDone ( ) ) { try { fut . get ( ) ; } catch ( IgniteCheckedException ignored ) { } } }
target:  Awaits for previous async operation to be completed.