void XSLImportRule::loadSheet()
{
    Document* ownerDocument = nullptr;
    XSLStyleSheet* rootSheet = parentStyleSheet();

    if (rootSheet) {
        while (XSLStyleSheet* parentSheet = rootSheet->parentStyleSheet())
            rootSheet = parentSheet;
    }

    if (rootSheet)
        ownerDocument = rootSheet->ownerDocument();

    String absHref = m_strHref;
    XSLStyleSheet* parentSheet = parentStyleSheet();
    if (!parentSheet->baseURL().isNull()) {
        // Use parent styleheet's URL as the base URL
        absHref = KURL(parentSheet->baseURL(), m_strHref).getString();
    }

    // Check for a cycle in our import chain. If we encounter a stylesheet in
    // our parent chain with the same URL, then just bail.
    for (XSLStyleSheet* parentSheet = parentStyleSheet(); parentSheet; parentSheet = parentSheet->parentStyleSheet()) {
        if (absHref == parentSheet->baseURL().getString())
            return;
    }

    ResourceLoaderOptions fetchOptions(ResourceFetcher::defaultResourceOptions());
    FetchRequest request(ResourceRequest(ownerDocument->completeURL(absHref)), FetchInitiatorTypeNames::xml, fetchOptions);
    request.setOriginRestriction(FetchRequest::RestrictToSameOrigin);
    RawPtr<XSLStyleSheetResource> resource = XSLStyleSheetResource::fetchSynchronously(request, ownerDocument->fetcher());
    if (!resource || !resource->sheet())
        return;

    ASSERT(!m_styleSheet);
    setXSLStyleSheet(absHref, resource->response().url(), resource->sheet());
}