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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 _read_channel(stream, num, name, ctype, epoch, start, end, scaled=True, series_class=TimeSeries):
 """Read a channel from a specific frame in a stream """

    data = _get_frdata(stream, num, name, ctype=ctype)
    return read_frdata(data, epoch, start, end,
                       scaled=scaled, series_class=series_class)