@observe(('title', 'title_editable', 'title_bar_visible', 'icon',
        'icon_size', 'stretch', 'closable'))
    def _update_proxy(self, change):
        # The superclass implementation is sufficient.
        super(DockItem, self)._update_proxy(change)

    #--------------------------------------------------------------------------
    # Private API
    #--------------------------------------------------------------------------
Builds spell casting factory
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/widgets/dock_item.py/DockItem._update_proxy--crossover with--dataset/ETHPy150Open tuturto/pyherc/src/pyherc/test/builders/action.py/SpellCastingFactoryBuilder.build