struct X {

[[nodiscard]] static std::error_code prefetch(
    const file_dir_list& paths,
    prefetch_queue& queue
);

[[nodiscard]] static std::error_code load(
    // space stuff that has to persist
    dynamic_X_buffer& buffer,
    const file_dir_list& paths,
    dynamic_X_store& store,
    prefetch_lookup& id_lookup,
    bool pedantic = false
);

}