anchor.diff:     * To activate this way of resolving proxies assign this function to
      * the [findProxy] property on the [HttpClient].
      *
  -   *   HttpClient client = new HttpClient();
  -   *   client.findProxy = HttpClient.findProxyFromEnvironment;
  +   *     HttpClient client = new HttpClient();
  +   *     client.findProxy = HttpClient.findProxyFromEnvironment;
      *
      * If you don't want to use the system environment you can use a
      * different one by wrapping the function.
      *
  -   *   HttpClient client = new HttpClient();
  -   *   client.findProxy = (url) {
  -   *     return HttpClient.findProxyFromEnvironment(
  -   *         url, {"http_proxy": ..., "no_proxy": ...});
  -   *   }
  +   *     HttpClient client = new HttpClient();
  +   *     client.findProxy = (url) {
  +   *       return HttpClient.findProxyFromEnvironment(
  +   *           url, {"http_proxy": ..., "no_proxy": ...});
  +   *     }
      */
     static String findProxyFromEnvironment(Uri url,
                                            {Map<String, String> environment}) {
  
positive.code:  * will be determined from the "charset" parameter of the
   * "Content-Type" header.
   *
   *   HttpResponse response = ...
   *   response.headers.contentType
   *       = new ContentType("application", "json", charset: "utf-8");
   *   response.write(...);  // Strings written will be UTF-8 encoded.
   *
   * If no charset is provided the default of ISO-8859-1 (Latin 1) will
   * be used.
   *
   *   HttpResponse response = ...
   *   response.headers.add(HttpHeaders.CONTENT_TYPE, "text/plain");
   *   response.write(...);  // Strings written will be ISO-8859-1 encoded.
   *
   * If an unsupported encoding is used an exception will be thrown if
   * using one of the write methods taking a string.
  
negative.code:  * encoding used will be determined from the "charset" parameter of
   * the "Content-Type" header.
   *
   *     HttpClientRequest request = ...
   *     request.headers.contentType
   *         = new ContentType("application", "json", charset: "utf-8");
   *     request.write(...);  // Strings written will be UTF-8 encoded.
   *
   * If no charset is provided the default of ISO-8859-1 (Latin 1) will
   * be used.
   *
   *     HttpClientRequest request = ...
   *     request.headers.add(HttpHeaders.CONTENT_TYPE, "text/plain");
   *     request.write(...);  // Strings written will be ISO-8859-1 encoded.
   *
   * If an unsupported encoding is used an exception will be thrown if
   * using one of the write methods taking a string.
  