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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def libvlc_audio_filter_list_get(p_instance):
    '''Returns a list of audio filters that are available.
    @param p_instance: libvlc instance.
    @return: a list of module descriptions. It should be freed with L{libvlc_module_description_list_release}(). In case of an error, NULL is returned. See L{ModuleDescription} See L{libvlc_module_description_list_release}.
    '''
    f = _Cfunctions.get('libvlc_audio_filter_list_get', None) or \
        _Cfunction('libvlc_audio_filter_list_get', ((1,),), None,
                    ctypes.POINTER(ModuleDescription), Instance)
    return f(p_instance)