Shopify.Multipass.get_url

You're seeing just the function get_url, go back to Shopify.Multipass module for more information.
Link to this function

get_url(shop_name, customer_data, multipass_secret, config_opts \\ %{})

Specs

get_url(binary(), map(), binary(), map()) :: binary()

Get the full URL for the Multipass signin.