def METHOD_NAME(self):
    field_options = {'coerce': lambda x: x}
    choices = [(x['id'], x['option']) for x in self.object.field_data['options']]
    if self.object.field_data['display_type'] == 'select':
        field_class = _EmptyNoneSelectField
        choices = [('', '')] + choices
    else:
        field_class = _EmptyNoneRadioField
        field_options['orientation'] = self.object.field_data['radio_display_type']
        if field_options['orientation'] == 'vertical' and not self.object.is_required:
            field_options['default'] = ''
            choices = [('', _('No selection'))] + choices
    return self._make_wtforms_field(field_class, choices=choices, **field_options)