anchor.diff:  -export([
       m_find_value/3,
       m_to_list/2,
  -    m_value/2
  +    m_value/2,
  +    
  +    get/2
   ]).
   
   -include_lib("zotonic.hrl").
  
positive.code: 
  
  %% @doc Fetch the field from the wrq interface.
  get(method, RD) -> wrq:method(RD);
  get(version, RD) -> wrq:version(RD);
  get(peer, RD) -> wrq:peer(RD);
  
negative.code: get(path, RD) -> wrq:path(RD);
  get(qs, RD) -> wrq:req_qs(RD);
  get(headers, RD) -> wrq:req_headers(RD);
  get(user_agent, RD) -> proplists:get_value("user-agent", wrq:req_headers(RD));
  get(_Key, _RD) -> undefined.
  
  
  