Method to_string_kind

gi/object.cpp:3365–3369

* ObjectInstance::to_string_kind: * * ObjectInstance shows a "disposed" marker in its toString() method if the * wrapped GObject has already been disposed. */

 * wrapped GObject has already been disposed.
 */
const char* ObjectInstance::to_string_kind() const {
    if (m_gobj_finalized)
        return "object (FINALIZED)";
    return m_gobj_disposed ? "object (DISPOSED)" : "object";
}

/**
 * ObjectBase::init_gobject: