@@ 1013,6 1013,7 @@ class PlotSeries(namedtuple('PlotSeries' - `extra`: a `dict` of extra information such as plot styling
'''
+ # TODO: PlotSeries.promote() is nonsense at present
@timerange
def promote(cls, data, tsmap=None, extra=None):
''' Promote `data` to a `PlotSeries`.