anchor.diff:  {
       \"error\": \"payment required\"
   }
  +
  +HEAD /nothing
  +< 404
  +< Content-Type: text/html
  +<<<
  +>>>
   "/utf8>>);
   mock_katt_blueprint_parse_file("/mock/test2.apib") ->
     katt_blueprint_parse:string(
  
positive.code:     \"error\": \"payment required\"
  }
  "/utf8>>}};
  
  %% Mock request for test-params:
  mock_lhttpc_request( "http://test-params/test2"
  
negative.code:                    , {_, _, pass}
                     , {_, _, pass}
                     , {_, _, pass}
                     , {_, _, pass}
                     ]
                   }
                 , katt:run(Scenario)
  