vatcheckapi.com requires authentication via an API key. For this package, the API key is saved as a
environmental variable. In interactive mode, using vatcheckapi_api_key
will require you to enter an API key. Alternatively, you can also use
Sys.setenv(VATCHECKAPI_API_KEY = <key>) to set the API key manually.
vatcheckapi_api_key(force = FALSE)Returns the set API key that has been stored as an enviroment variable.
If TRUE, resets the API key & requires the user to provide a new API key. If FALSE and an API key
already exists, the key will be printed to the console. If no key exists,
you will be required to enter a key.
force. Defaults to FALSE.