namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
{
    public abstract class Frame : IFeatureCollection, IHttpBodyControlFeature, IHttpConnectionFeature, IHttpMaxRequestBodySizeFeature, IHttpRequestFeature, IHttpRequestIdentifierFeature, IHttpRequestLifetimeFeature, IHttpResponseFeature, IHttpUpgradeFeature, IHttpMinRequestBodyDataRateFeature, IHttpMinResponseDataRateFeature, IFrameControl, IEnumerable, IEnumerable<KeyValuePair<Type, object>>
    {
        protected Stack<KeyValuePair<Func<object, Task>, object>> _onStarting;
    }
}