anchor.diff:                                     {'expires', <<"213">>}, {'from', <<"sip:alice@localhost">>},
                                      {'in-reply-to', <<"70710@saturn.bell-tel.com, 17320@saturn.bell-tel.com">>}, {'max-forwards', 70},
                                      {'min-expires', <<"213">>}, {'mime-version', <<"1.0">>},
  +                                   {'organization', <<"Boxes by Bob">>},
   
   
                                      {'content-length', <<"5">>}, {'via', <<"SIP/2.0/UDP localhost">>},
  
positive.code:                      "Expires: 213\r\nFrom: sip:alice@localhost\r\n",
                       "In-Reply-To: 70710@saturn.bell-tel.com, 17320@saturn.bell-tel.com\r\nMax-Forwards: 70\r\n",
                       "Min-Expires: 213\r\nMIME-Version: 1.0\r\n",
  
                       "Content-Length: 5\r\nVia: SIP/2.0/UDP localhost\r\n",
                       "To: sip:bob@localhost\r\n"
  
negative.code:      % MIME-Version
       ?_assertEqual({1, 0}, parse('mime-version', <<"1.0">>)),
       ?_assertEqual(<<"1.0">>, format('mime-version', {1, 0})),
  
       % Organization
       ?_assertEqual(<<"Boxes by Bob">>, parse('organization', <<"  Boxes by Bob  ">>)),
       ?_assertEqual(<<"Boxes by Bob">>, format('organization', <<"Boxes by Bob">>)),
  
  
  
  