Sys { public static Env env (String name, String defaulT) { return System.getenv (name) != null ? new Env(System.getenv (name)) : new Env(defaulT); }  static Env env(String name, String defaulT); static Env env(String name);  }
@Test public void test_sys_default() { assertThat(Sys.env("__hope_does_not_exist", "it did not").string()).isEqualTo("it did not"); }
@Test public void test_sys_default_template() { assertThat(Sys.env("{__hope_does_not_exist || it did not}").string()).isEqualTo("it did not"); }