mix nerves_hub.device.cert_create

You're seeing just the function cert_create, go back to mix nerves_hub.device module for more information.
Link to this function

cert_create(org, product, identifier, opts, auth \\ nil)

View Source

Specs

cert_create(
  String.t(),
  String.t(),
  String.t(),
  keyword(),
  nil | NervesHubUserAPI.Auth.t()
) :: :ok