code: def plot(self, label='key', **kwargs):
          
          # make plot
          from ..plot import Plot
          plot = Plot(self, projection='segments', **kwargs)
  
          # update labels
          artists = [x for ax in plot.axes for x in ax.collections]
          for key, artist in zip(self, artists):
              if label.lower() == 'name':
                  lab = self[key].name
              elif label.lower() != 'key':
                  lab = key
              else:
                  lab = label
              artist.set_label(lab)
  
          return plot
docs: Plot this flag on a segments projection.
  
          Parameters
          ----------
          label : `str`, optional
              Labelling system to use, or fixed label for all flags,
              special values include
  
              - ``'key'``: use the key of the `DataQualityDict`,
              - ``'name'``: use the :attr:`~DataQualityFlag.name` of the flag
  
              If anything else, that fixed label will be used for all lines.
  
          **kwargs
              all keyword arguments are passed to the
              :class:`~gwpy.plot.Plot` constructor.
  
          Returns
          -------
          figure : `~matplotlib.figure.Figure`
              the newly created figure, with populated Axes.
  
          See Also
          --------
          matplotlib.pyplot.figure
              for documentation of keyword arguments used to create the
              figure
          matplotlib.figure.Figure.add_subplot
              for documentation of keyword arguments used to create the
              axes
          gwpy.plot.SegmentAxes.plot_segmentlist
              for documentation of keyword arguments used in rendering the data