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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 _extract_header(time_series):
 """Return a copy of time_series with the points removed."""

    return TimeSeries(
        metric=time_series.metric,
        resource=time_series.resource,
        metric_kind=time_series.metric_kind,
        value_type=time_series.value_type,
    )