@callback build(%NervesHubLink.Configurator.Config{
  device_api_host: term(),
  device_api_port: term(),
  device_api_sni: term(),
  fwup_devpath: term(),
  fwup_env: term(),
  fwup_public_keys: term(),
  nerves_key: term(),
  params: term(),
  remote_iex: term(),
  socket: term(),
  ssl: term()
}) :: NervesHubLink.Configurator.Config.t()