QueryablePattern<TSource1, TSource2, TSource3, TSource4> public class QueryablePattern<TSource1, TSource2, TSource3, TSource4> : QueryablePattern Documentation Code public QueryablePattern<TSource1, TSource2, TSource3, TSource4, TSource5> And<TSource5>(IObservable<TSource5> other) public QueryablePlan<TResult> Then<TResult>(Expression<Func<TSource1, TSource2, TSource3, TSource4, TResult>> selector)