22.9.4 is_from_poller

   As described below, the type-specific pollers are queried to obtain the reply from an asynchronously invoked operation. If the reply is a system exception, it may be important for the client application to distinguish between an exception raised by the poll itself and an exception that is actually the reply for the asynchronous invocation. The is_from_poller attribute returns the value TRUE if and only if the poller itself has raised a system exception during the invocation of one of the type specific poller operations. If the exception raised from one of the type specific poller operations is the reply for the asynchronous operation, the value FALSE is returned. If the Poller has not yet returned a response to the client, the BAD_INV_ORDER system exception is raised.