IQbservableProvider
Defines methods to create and execute queries that are described by an IQbservable object.
            
                using System.Linq.Expressions;
using System.Runtime.CompilerServices;
namespace System.Reactive.Linq
{
    [System.Runtime.CompilerServices.NullableContext(1)]
    public interface IQbservableProvider
    {
        IQbservable<TResult> CreateQuery<[System.Runtime.CompilerServices.Nullable(2)] TResult>(Expression expression);
    }
}