<?php
  
  OCP\App::addNavigationEntry(array(
      'id' => 'search',
      'href' => OCP\Util::linkTo('search', 'index.php'),
      'icon' => OCP\Util::imagePath('', 'actions/search.svg'),
      'name' => 'Adv. Search',
      'order' => 50
  ));