@Test public void testPassThruNoMissingArgs() throws Exception {
String templates =
"a(x,y) ::= \"<b(y={99},x={1},...)>\"\n" +
"b(x,y) ::= \"<x><y>\"\n";
STGroup group = new STGroupString(templates);
ST a = group.getInstanceOf("a");
a.add("x", "x");
a.add("y", "y");
String expected = "199";
String result = a.render();
assertEquals(expected, result);