anchor.diff:  
   code_to_phrase(100) -> "Continue";
   code_to_phrase(101) -> "Switching Protocols ";
  +code_to_phrase(102) -> "Processing";
   code_to_phrase(200) -> "OK";
   code_to_phrase(201) -> "Created";
   code_to_phrase(202) -> "Accepted";
  
positive.code: code_to_phrase(503) -> "Service Unavailable";
  code_to_phrase(504) -> "Gateway Timeout";
  code_to_phrase(505) -> "HTTP Version Not Supported";
  code_to_phrase(511) -> "Network Authentication Required";
  
  %% Below are some non-HTTP status codes from other protocol standards that
  
negative.code: code_to_phrase(415) -> "Unsupported Media Type";
  code_to_phrase(416) -> "Requested Range Not Satisfiable";
  code_to_phrase(417) -> "Expectation Failed";
  code_to_phrase(418) -> "I'm a teapot";
  code_to_phrase(420) -> "Enhance Your Calm";
  code_to_phrase(422) -> "Unprocessable Entity";
  code_to_phrase(423) -> "Locked";
  code_to_phrase(424) -> "Method Failure";
  code_to_phrase(425) -> "Unordered Collection";
  code_to_phrase(426) -> "Upgrade Required";
  code_to_phrase(428) -> "Precondition Required";
  code_to_phrase(429) -> "Too Many Requests";
  code_to_phrase(431) -> "Request Header Fields Too Large";
  