   CDXPlotContext : ['./container', 'plotcontexts']
   PlotContext : ['./container', 'plotcontexts']
   ScatterRenderer: ['./schema_renderers', 'scatterrenderers']
+  LineRenderer: ['./schema_renderers', 'linerenderers']
   DiscreteColorMapper :['./mapper', 'discretecolormappers']
   DataTable :['./table', 'datatables']
   PandasPivot :['./pandas/pandas', 'pandaspivots']

      model = coll.get(attrs.id)
      model.trigger('add', model, coll, {});

  # trigger change events on all old models
  for coll_attrs in oldspecs
    [coll, attrs] = coll_attrs
    if coll
      coll.get(attrs['id']).change()

  return null



    if coll
      coll.get(attrs['id']).dinitialize(attrs)

  # trigger add events on all new models
  for coll_attrs in newspecs
    [coll, attrs] = coll_attrs
