Function gstreamer_audio_sys::gst_audio_aggregator_set_sink_caps

pub unsafe extern "C" fn gst_audio_aggregator_set_sink_caps(
    aagg: *mut GstAudioAggregator, 
    pad: *mut GstAudioAggregatorPad, 
    caps: *mut GstCaps
)

This is supported on crate feature v1_14 only.