question: private static DeleteVmResponse checkDeleteVmResponse ( DeleteVmResponse deleteVmResponse ) throws RpcException { logger . info ( "Checking {}" , deleteVmResponse ) ; switch ( deleteVmResponse . getResult ( ) ) { case OK : break ; case SYSTEM_ERROR : throw new SystemErrorException ( deleteVmResponse . getError ( ) ) ; case VM_NOT_FOUND : throw new VmNotFoundException ( deleteVmResponse . getError ( ) ) ; case VM_NOT_POWERED_OFF : throw new VmNotPoweredOffException ( deleteVmResponse . getError ( ) ) ; default : throw new RpcException ( String . format ( "Unknown response: %s" , deleteVmResponse . getResult ( ) ) ) ; } return deleteVmResponse ; }
target:  This method validates a DeleteVmResponse object, raising an exception if the response reflects an operation failure.