PlugShopifyEmbeddedSwitch.Helper.get_param_from_url

You're seeing just the function get_param_from_url, go back to PlugShopifyEmbeddedSwitch.Helper module for more information.
Link to this function

get_param_from_url(conn, key)

Specs

get_param_from_url(
  atom()
  | %{:params => nil | maybe_improper_list() | map(), optional(any()) => any()},
  any()
) :: any()