IGroupedObservable<TKey, TElement>
Represents an observable sequence of elements that have a common key.
using System.Runtime.CompilerServices;
namespace System.Reactive.Linq
{
[System.Runtime.CompilerServices.NullableContext(1)]
public interface IGroupedObservable<[System.Runtime.CompilerServices.Nullable(2)] out TKey, [System.Runtime.CompilerServices.Nullable(2)] out TElement> : IObservable<TElement>
{
TKey Key { get; }
}
}