code: def overview():
      
      doc = Host()
      search = doc.search()
      search.aggs.bucket('tag_count', 'terms', field='tags', order={'_count': 'desc'}, size=100)
      response = search.execute()
      print_line("{0:<25} {1}".format('Tag', 'Count'))
      print_line("-" * 30)
      for entry in response.aggregations.tag_count.buckets:
          print_line("{0:<25} {1}".format(entry.key, entry.doc_count))
docs: Prints an overview of the tags of the hosts.