// message Person {
// optional boolean active = 1 [(type).code = 68];
// }
@Test public void should_provide_group_fields_for_first_field_in_field_custom_option() {
CustomFieldOption option = xtext.find("type", ")", CustomFieldOption.class, IGNORE_CASE);
MessageOptionField codeOptionField = (MessageOptionField) option.getFields().get(0);
IScope scope = scopeProvider.scope_OptionField_target(codeOptionField, reference);
Group groupMessage = xtext.find("Type", " =", Group.class);
assertThat(descriptionsIn(scope), containAllFieldsIn(groupMessage));
}