<commit_before>  function MyPreMiddleware(request, session, spec)
  print("MyPreMiddleware, request=", request, "session=", session, "spec=", spec)
  tyk.req.set_header("myluaheader", "myluavalue")
  -- print("User-Agent header:", tyk.header["User-Agent"])
  return request, session
end<commit_msg>Update Lua sample with header transformations.<commit_after>  function MyPreMiddleware(request, session, spec)
  print("MyPreMiddleware, request=", request, "session=", session, "spec=", spec)
  tyk.req.set_header("myluaheader", "myluavalue")
  local headers = tyk.req.get_headers()
  print(headers)
  tyk.req.clear_header("User-Agent")
  -- print("User-Agent header:", tyk.header["User-Agent"])
  return request, session
end
{'fraction_non_alphanumeric': 0.15629322268326418, 'fraction_numerical': 0.0, 'mean_word_length': 6.387755102040816, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5086841', 'n_tokens_mistral': 229, 'n_tokens_neox': 235, 'n_words': 51}