///pubmoddecode;///pubmodindex;///pubmodwrite;/// The offset to a chunk as seen relative to the beginning of the file containing it.
pubtypeOffset=u64;/// A chunk file providing a table into the parent data.
pubstructIndex{/// If true, we use `chunks` in a way that facilitates writing them.
will_write:bool,
/// Validated chunks as defined by their index entries.
////// Note that this list cannot be empty.
chunks:Vec<index::Entry>,
}