/* Returns the new list or NULL in case of failure.  */
CRSelector* cr_selector_append_simple_sel(CRSelector *a_this, CRSimpleSel *a_simple_sel)
/* Returns the new list or NULL in case of failure.  */
CRSelector* cr_selector_append_simple_sel(CRSelector *a_this, CRSimpleSel *a_simple_sel)
{
        CRSelector *selector = NULL;
        selector = cr_selector_new (a_simple_sel);
        g_return_val_if_fail (selector, NULL);
        return cr_selector_append (a_this, selector);
}