anchor.diff:  
   -ifdef(with_crypto_hash).
   test_with_crypto_hash(_Config) ->
  -    ?assert(lists:member(erlang:system_info(otp_release), ["R16B", "18", "19", "20", "21", "22"])),
  +    ?assert(lists:member(erlang:system_info(otp_release), ["R16B", "18", "19",
  +                                                           "20", "21", "22"])),
       ok.
   -else.
   test_with_crypto_hash(_Config) ->
  
positive.code:     ok.
  -else.
  test_have_ssl_handshake(_Config) ->
      ?assert(lists:member(erlang:system_info(otp_release), ["R14B04", "R15B", "R16B", "18", "19"])),
      ok.
  -endif.
  
  
negative.code:     ok.
  -else.
  test_have_new_stacktrace(_Config) ->
      ?assert(lists:member(erlang:system_info(otp_release), ["R14B04", "R15B",
                                                             "R16B", "18", "19"])),
      ok.
  -endif.
  
  