def METHOD_NAME(self, product, allowlistedDomains):
    """Returns True if the blob contains any file URLs that contain a
    domain that we're not allowed to serve updates to."""
    for vendor in self.get("vendors", {}).values():
        for platform in vendor.get("platforms", {}).values():
            if "fileUrl" in platform:
                if isForbiddenUrl(platform["fileUrl"], product, allowlistedDomains):
                    return True
    return False