def METHOD_NAME() -> None:
    head_guid = generate_guid()
    tail_guid = generate_guid()
    edge_type = "analysis"
    description = "hyper-spectral quantum blockchain ML"
    link = Link(head_guid, tail_guid, edge_type, description)
    lstr = link_to_str(link)
    newlink = str_to_link(lstr)
    assert newlink == link