public async ValueTask <IReadOnlyList <IndexEdge <TEntity> > > ToIndexEdgesAsync(
int offset,
CancellationToken cancellationToken)
{
var list = new List <IndexEdge <TEntity> >();
using IAsyncCursor <TEntity> cursor = await _source
.ToCursorAsync(cancellationToken)
.ConfigureAwait(false);
var index = offset;
while (await cursor.MoveNextAsync(cancellationToken).ConfigureAwait(false))
{
foreach (TEntity item in cursor.Current)
{
list.Add(IndexEdge <TEntity> .Create(item, index++));
}
}
return(list);
}