@Test public void testReturnValues() throws Exception {
		String action = "$lab.e; $b.e; $y.e = \"\";";
		String expected = "((AContext)_localctx).lab.e; ((AContext)_localctx).b.e; _localctx.y.e = \"\";";
		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