mpxs_usage_va_1(r, "$r->print(...)");
mpxs_usage_va_1(r, "$r->rflush()");
int mpxs_Apache__RequestRec_rflush(pTHX_ I32 items,                                   SV **MARK, SV **SP){    modperl_config_req_t *rcfg;    request_rec *r;        /* this also magically assings to r ;-) */    mpxs_usage_va_1(r, "$r->print(...)");    rcfg = modperl_config_req_get(r);    MP_FAILURE_CROAK(modperl_wbucket_flush(rcfg->wbucket));    return ap_rflush(r);}