anchor.diff:  #include <nng/nng.h>
   #include <nng/supplemental/http/http.h>
   
  -int nng_http_res_set_header(nng_http_res *res, const char *key);
  +int nng_http_res_del_header(nng_http_res *res, const char *key);
   ----
   
   == DESCRIPTION
  
positive.code: = nng_http_res_set_header(3http)
  //
  // Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
  // Copyright 2018 Capitar IT Group BV <info@capitar.com>
  //
  // This document is supplied under the terms of the MIT License, a
  
negative.code: 
  == NAME
  
  nng_http_res_del_header - delete HTTP response header
  
  == SYNOPSIS
  
  