/**
  * @param Artist $artist
  * @return \Symfony\Component\Form\Form
  */
 private function createArtistForm(Artist $artist)
 {
     if ($artist->getId()) {
         $options = ['action' => $this->generateUrl('manage_lyrics_edit', ['id' => $artist->getId()]), 'method' => 'PUT'];
     } else {
         $options = ['action' => $this->generateUrl('manage_lyrics_create'), 'method' => 'POST'];
     }
     $form = $this->createForm(new ArtistType(), $artist, $options);
     $form->add('submit', 'submit', ['label' => 'Save']);
     return $form;
 }