@Test
  public void doubleFromTest() {
    String statement = "SELECT * FROM MyType JOIN YourType WHERE a='1'";

    CmisQueryWalker walker = traverseStatementAndCatchExc(statement);
    assertNotNull(walker);

    QueryObject from = queryObj;
    Map<String, String> types = from.getTypes();
    assertTrue(2 == types.size());
  }