pub type BlockSink<'a> = dyn FnMut(&[u8], &[u8]) -> Result<()> + 'a;Expand description
Visitor sink for build_folder_dag.
Called once per emitted block as (cid_bytes, block_bytes). For dag-pb
nodes block_bytes is the canonical pbnode encoding; for raw leaves it is
the raw chunk. The root block is always emitted last.