namespace System.Web.Http.OData
{
    [CLSCompliant(false)]
    [ODataNullValue]
    public abstract class AsyncEntitySetController<TEntity, TKey> : ODataController
        where TEntity, class
    {
        [AcceptVerbs(new[] { "PATCH", "MERGE" })]
        [AsyncStateMachine(typeof(<Patch>d__c))]
        [DebuggerStepThrough]
        public virtual Task<HttpResponseMessage> Patch([FromODataUri] TKey key, Delta<TEntity> patch);
    }
}