Hello, I'm trying to rewrite basic tutorial #8 (https://gstreamer.freedesktop.org/documentation/tutorials/basic/short-cutting-the-pipeline.html) in Python and in original C code we have lines:

GstAudioInfo info;
gst_audio_info_set_format(&info, GST_AUDIO_FORMAT_S16, SAMPLE_RATE, 1, NULL);

I've rewritten them as:

info = GstAudio.AudioInfo()
info.set_format(
    format=GstAudio.AudioFormat.S16,
    rate=SAMPLE_RATE,
    channels=1,
    position=None
)

According to documentation and source code of `gst_audio_info_set_format` last parameter `position` is nullable (for 1 and 2 channel setup).
Python documents type of `position` argument as `GstAudio.AudioChannelPosition` and nothing said if it accepts `None`, so with Python code above I will get an error: "Argument 4 does not allow None as a value".

I can't pass list of `GstAudio.AudioChannelPosition` instead - I will get "Expected a GstAudio.AudioChannelPosition, but got list". Isn't list of `GstAudio.AudioChannelPosition` an equivalent of `GstAudioChannelPosition*`?

Also it's weird why `position` in C code is annotated with `fixed size` of 64 when in fact 64 is the maximum size of channel positions array and channel count argument used to determine actual array size.