Sms77.Config.api_key-exclamation-mark

You're seeing just the function api_key-exclamation-mark, go back to Sms77.Config module for more information.

api_key!()

api_key!() :: String.t() | no_return()

Return configured API Key

iex> Application.put_env(:sms77, :api_key, "your apikey")
iex> Sms77.Config.api_key!()
"your apikey"