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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_media_duplicate(p_md):
    '''Duplicate a media descriptor object.
    @param p_md: a media descriptor object.
    '''
    f = _Cfunctions.get('libvlc_media_duplicate', None) or \
        _Cfunction('libvlc_media_duplicate', ((1,),), class_result(Media),
                    ctypes.c_void_p, Media)
    return f(p_md)