code: def test_storeTzNoRaise(self):
      # storing TZ to cache should never raise exception
      tkr = "AMZN"
      tz1 = "America/New_York"
      tz2 = "London/Europe"
      cache = yf.utils.get_tz_cache()
      cache.store(tkr, tz1)
      cache.store(tkr, tz2)
  
file_path: yfinance/tests/utils.py
imports: from .context import yfinance
  import unittest
  import tempfile
  import os
label_desc: Use image node_id 3 for calling the TestCache obj's underlying member method code with example usage: obj.test_storeTzNoRaise() without return types