def __call__(self, form, form_opts=None, field_args={}):
        result = []

        for r in self.rules:
            result.append(r(form, form_opts, field_args))

        return Markup(self.separator.join(result))
Render all children.
dataset/ETHPy150Open mrjoes/flask-admin/flask_admin/form/rules.py/NestedRule.__call__