@Test public void testReturnValuesCurrentRule() throws Exception {
		String action = "$y; $ctx.y;";
		String expected = "_localctx.y; _localctx.y;";
		testActions(attributeTemplate, "inline", action, expected);
	}
Regression test for "in antlr v4 lexer, $ translation issue in action".
https://github.com/antlr/antlr4/issues/176
tool-testsuite/test/org/antlr/v4/test/tool/TestActionTranslation.java