public void testInvokeMethodInAbstractClass() {
    final ParserContext parserContext = new ParserContext();
    parserContext.setStrictTypeEnforcement(true);
    parserContext.setStrongTyping(true);
    parserContext.addInput("a", O1.class);
    assertEquals(String.class, MVEL.analyze("a.getObj().getValue()", parserContext));

    Map vars = new HashMap() {{ put("a", new O1()); }};
    assertEquals("value", MVEL.executeExpression(MVEL.compileExpression("a.getObj().getValue()", parserContext), vars));
  }