/**
  * Render the form.
  *
  * @return string
  * @api
  */
 public function render()
 {
     $personen = array();
     if ($this->arguments['contactIds'] !== NULL) {
         foreach ($this->arguments['contactIds'] as $contactId) {
             $person = $this->userRepository->findByIdentifier($contactId);
             if ($person !== NULL) {
                 $personen[] = $person;
             }
         }
     }
     $this->templateVariableContainer->add($this->arguments['as'], $personen);
     return $this->renderChildren();
 }
 /**
  * Get data
  *
  * @param NodeInterface $node The node that is currently edited (optional)
  * @param array $arguments Additional arguments (key / value)
  * @return array JSON serializable data
  */
 public function getData(NodeInterface $node = NULL, array $arguments)
 {
     $contacts = array();
     foreach ($this->userRepository->findAll() as $account) {
         $contacts[$account->getId()] = array('label' => $account->getName()->getFullname(), 'group' => substr($account->getName()->getLastname(), 0, 1), 'icon' => 'icon-key');
     }
     return $contacts;
     //        return (array(
     //            'key' => array('label' => 'Foo', 'group' => 'A', 'icon' => 'icon-key'),
     //            'key2' => array('label' => 'Foo2', 'group' => 'A', 'icon' => 'icon-key'),
     //            'legal' => array('label' => 'Legal', 'group' => 'B', 'icon' => 'icon-legal'),
     //            'legal2' => array('label' => 'Legal2', 'group' => 'B', 'icon' => 'icon-legal'),
     //            'legal3' => array('label' => 'Legal3', 'group' => 'B', 'icon' => 'icon-legal'),
     //            'legal4' => array('label' => 'Legal4', 'group' => 'C', 'icon' => 'icon-legal')
     //        ));
 }