code: def test_timezone_formatter(self, full_tz_name):
      # This test will fail if we use "now" as date as soon as we change from/to DST
      dt = datetime(1986, 2, 14, tzinfo=pytz.timezone("UTC")).replace(
          tzinfo=dateutil_tz.gettz(full_tz_name)
      )
      abbreviation = dt.tzname()
  
      result = self.formatter._format_token(dt, "ZZZ")
      assert result == abbreviation
  
imports: from datetime import datetime
  import pytest
  import pytz
  from dateutil import tz
  from arrow import FORMAT_ATOM, FORMAT_COOKIE, FORMAT_RFC822, FORMAT_RFC850, FORMAT_RFC1036, FORMAT_RFC1123, FORMAT_RFC2822, FORMAT_RFC3339, FORMAT_RSS, FORMAT_W3C
  from .utils import make_full_tz_list
label_desc: Use image node_id 11 for calling the TestFormatterFormatToken obj's underlying member method code with example usage: obj.test_timezone_formatter(full_tz_name) without return types