@Test
public void testLoad_ingredientWithBooleanParam() {

  String yaml =
      String.join(
          "\n",
          "domain: 'test'",
          "ingredients:",
          "  - name: 'ingredient'",
          "    optionals:",
          "      - name: 'foo'",
          "        type: 'boolean'");
  loader.load(toStream(yaml));
}