new_contents: from wikilink import wiki_link
  model = wiki_link.WikiLink()
  model.setup_db("mysql", "root", "13061990", "127.0.0.1", "3306")
  source_url = "https://en.wikipedia.org/wiki/Cristiano_Ronaldo"
  dest_url = "https://en.wikipedia.org/wiki/Software_engineer"
  print(model.min_link(source_url, dest_url, 6, 2))
subject: Implement multiprocessing