Map<String,String> types = qo.getTypes();
assertTrue(2 == types.size());
List<CmisSelector> selects = qo.getSelectReferences();
assertTrue(2 == selects.size());
ColumnReference colRef = ((ColumnReference) selects.get(0));
assertEquals(colRef.getTypeDefinition(), bookType);
assertTrue(colRef.getPropertyQueryName().equals(TITLE_PROP));
colRef = ((ColumnReference) selects.get(1));
assertEquals(colRef.getTypeDefinition(), myType);
assertTrue(colRef.getPropertyQueryName().equals(STRING_PROP));
}