{{ $kind := . }}
{{ $menus := index site.Data.menus (printf "%s" site.Language) }}
{{ $menu := "" }}
// Try to get menus from the data/menus/<lang> directory
{{ if (and $menus (isset $menus $kind)) }}
  // Menu found in data/menus/<lang>
  {{ $menu = index $menus $kind }}
{{ else }}
  // Fallback to menu in the data/menus directory
  {{ $menu = index site.Data.menus $kind }}
{{ end }}

{{ return $menu }}