question: private static CreateVmResponse checkCreateVmResponse ( CreateVmResponse createVmResponse ) throws RpcException { logger . info ( "Checking {}" , createVmResponse ) ; switch ( createVmResponse . getResult ( ) ) { case OK : break ; case DISK_NOT_FOUND : throw new DiskNotFoundException ( createVmResponse . getError ( ) ) ; case IMAGE_NOT_FOUND : throw new ImageNotFoundException ( createVmResponse . getError ( ) ) ; case INVALID_RESERVATION : throw new InvalidReservationException ( createVmResponse . getError ( ) ) ; case NETWORK_NOT_FOUND : throw new NetworkNotFoundException ( createVmResponse . getError ( ) ) ; case SYSTEM_ERROR : throw new SystemErrorException ( createVmResponse . getError ( ) ) ; default : throw new RpcException ( String . format ( "Unknown result: %s" , createVmResponse . getResult ( ) ) ) ; } return createVmResponse ; }
target:  This method validates a CreateVmResponse object, raising an exception if the response reflects an operation failure.