how to guard deprecated signals

[Stefan Kost <ensonic hora-obscura de>]

hi,

just found a property in gstreamer that is deprecated. Thus I get this from gtk-doc:

WARNING: GstBaseRTPDepayload::queue-delay is deprecated in the inline comments
         but no deprecation guards were found around the declaration.
         (See the --deprecated-guards option for gtkdoc-scan.)

Now I wonder where one should/could add deprecation guards?
#ifndef GST_DISABLE_DEPRECATED
#endif

gtk-doc expects them in the headers.

Stefan