Function tree_walk 

pub fn tree_walk<R: Read + Seek>(
    reader: &mut BlockReader<R>,
    root_logical: u64,
    traversal: Traversal,
    visitor: &mut dyn FnMut(&TreeBlock),
) -> Result<()>

Walk a tree starting at root_logical, calling visitor for each block.

Errors

Returns an error if any tree block cannot be read.