public ValueTask <int> GetCountAsync(bool onlyIfCheap, CancellationToken cancellationToken) => _source.GetCountAsync(_minIndexInclusive, _maxIndexInclusive, onlyIfCheap, cancellationToken);
public ValueTask <int> GetCountAsync(bool onlyIfCheap, CancellationToken cancellationToken) => _source.GetCountAsync(_minIndexInclusive, _maxIndexInclusive, onlyIfCheap, cancellationToken);