2429     private struct Impl  struct
2431         ~this()  in ~this()
2438         Curl curl;
2439         curl_slist* headersOut;
2441         string charset;
2444         StatusLine status;
2448         Method method = Method.undefined;
2450         @system @property void onReceiveHeader(void delegate(in char[] key,  in onReceiveHeader()
3360     private struct Impl  struct
3362         ~this()  in ~this()
3369         curl_slist* commands;
3370         Curl curl;
3371         string encoding;
3759     private struct Impl  struct
3761         ~this()  in ~this()
3787     private RefCounted!Impl p;  argument