question: @ RpcMethod public void detachISO ( String vmId , boolean isDeleteFile , AsyncMethodCallback < Host . AsyncClient . detach_iso_call > handler ) throws RpcException { ensureClient ( ) ; DetachISORequest detachISORequest = new DetachISORequest ( vmId ) ; detachISORequest . setDelete_file ( isDeleteFile ) ; clientProxy . setTimeout ( DETACH_ISO_TIMEOUT_MS ) ; logger . info ( "detach_iso vm {}, target {}, request {}" , vmId , getHostIp ( ) , detachISORequest ) ; try { clientProxy . detach_iso ( detachISORequest , handler ) ; } catch ( TException e ) { throw new RpcException ( e . getMessage ( ) ) ; } }
target:  This method performs an asynchronous Thrift call to detach an ISO from a VM. On completion, the specified handler is invoked.