text: public virtual GetUsagePlanKeysResponse GetUsagePlanKeys(GetUsagePlanKeysRequest request){var options = new InvokeOptions();options.RequestMarshaller = GetUsagePlanKeysRequestMarshaller.Instance;options.ResponseUnmarshaller = GetUsagePlanKeysResponseUnmarshaller.Instance;return Invoke<GetUsagePlanKeysResponse>(request, options);}