question: @ RpcMethod public void createDisks ( String reservation , AsyncMethodCallback < Host . AsyncClient . create_disks_call > handler ) throws RpcException { ensureClient ( ) ; CreateDisksRequest createDisksRequest = new CreateDisksRequest ( reservation ) ; clientProxy . setTimeout ( CREATE_DISKS_TIMEOUT_MS ) ; logger . info ( "create_disks reservation {}, target {}, request {}" , reservation , getHostIp ( ) , createDisksRequest ) ; try { clientProxy . create_disks ( createDisksRequest , handler ) ; } catch ( TException e ) { throw new RpcException ( e . getMessage ( ) ) ; } }
target:  This method performs an asynchronous Thrift call to create a disk. On completion, the specified handler is invoked.