get node id of field collection I have the following code. I am able to load the field collection item using entity_load_single. I want to be able to get the node id for a given field collection item. How can I achieve this?

function dc_car_guide_model($model_id)
{
    $model = entity_load_single('field_collection_item', $model_id);
    //How can I get nid?
}
$model = entity_load_single('field_collection_item', $model_id);
$node = $model-&gt;hostEntity();
echo $node-&gt;nid;