core_server_config *conf = ap_get_module_config(r->server->module_config, &core_module);
conf = ap_get_module_config(r->server->module_config, &core_module);
const char *mpxs_Apache__RequestRec_document_root(pTHX_ request_rec *r,                                                  SV *new_root){    const char *retval = ap_document_root(r);        if (new_root) {        MP_CROAK_IF_THREADS_STARTED("setting $r->document_root");        core_server_config *conf =             ap_get_module_config(r->server->module_config,                                  &core_module);        conf->ap_document_root = SvPV_nolen(new_root);    }    return retval;}