Wrong instructions or simply the callback is broken?

[siulcode]

For some reason after following the instructions, I can't seem to get this callback to work.

I'm simply getting:

# sfn parameters create testapp
Usage: sfn [command] [options]
    -v, --version      Print version
    -h, --help         Display this help message.

Available commands:

  conf
  create
  describe
  destroy
  diff
  events
  export
  graph
  import
  init
  inspect
  lint
  list
  plan
  print
  promote
  realize
  trace
  update
  validate

See `<command> --help` for more information on a specific command.

Here's my config snippet.

Configuration.new do

  callbacks do
    require ['sfn-parameters']
    default ['parameters_infrastructure'] # or ['parameters_stacks']
  end


  sfn_parameters do
    directory 'infrastructure'
    destination 'default'
  end