What does auto std.stdio.File.ByChunkImpl byChunk (ulong chunkSize ); mean?

[Adam D. Ruppe]

On Friday, 3 August 2018 at 16:58:26 UTC, kdevel wrote:
> What does
>
>   auto std.stdio.File.ByChunkImpl byChunk (
>      ulong chunkSize
>   );
>
> on https://dlang.org/library/std/stdio/file.by_chunk.html mean?


It looks like ddox trying to tell you what the auto actually is. 
But it returns a ByChunkImpl which is just a range that handles 
the chunk; you are supposed to think of it as just being 
something you foreach or pass to other ranges.