/**
 * In wizard content type we have ability for inherit content from parent node.
 * If added parent node this function return it, otherwise this function return regular node.
 *
 * @param object $node
 * @return object
 */
function gm_wizard_content_resolver($node) {
  if ($node->type === 'wizard' && !empty($node->field_parent_content)) {
    $node_wrapper = entity_metadata_wrapper('node', $node);
    $node = $node_wrapper->field_parent_content->value();
  }

  return $node;
}