@observe(('minimum', 'maximum', 'datetime'))
    def _update_proxy(self, change):
        # The superclass implementation is sufficient.
        super(BoundedDatetime, self)._update_proxy(change)

    #--------------------------------------------------------------------------
    # Post Setattr Handlers
    #--------------------------------------------------------------------------
An observer which updates the proxy when the data changes.
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/widgets/bounded_datetime.py/BoundedDatetime._update_proxy