@view_config(renderer='templates/form.pt', name='checkboxchoice2')
    @demonstrate('Checkbox Choice Widget 2')
    def checkboxchoice2(self):
        choices = (('habanero', 'Habanero'),
                   ('jalapeno', 'Jalapeno'),
                   ('chipotle', 'Chipotle'))

        @colander.deferred
        def deferred_checkbox_widget(node, kw):
            return deform.widget.CheckboxChoiceWidget(values=choices)

        class Schema(colander.Schema):
            pepper = colander.SchemaNode(
                deform.Set(),
                widget=deferred_checkbox_widget,
                )
            required = colander.SchemaNode(
                colander.String()
                )

        schema = Schema()
        schema = schema.bind()
        form = deform.Form(schema, buttons=('submit',))
        return self.render_form(form)