extractRequest
suspend fun extractRequest(parameters: JarRequestParameters, parent: RequestParametersFrom<out RequestParameters>?): RequestParametersFrom<*>?(source)
Resolves the request object of the JAR request in parameters, either from request, or by fetching the request_uri with remoteResourceRetriever.
Returns null only if the request carries neither of the two, and throws if the request object can not be retrieved, or is not a valid request object.