public function save(array $form, FormStateInterface $form_state) {
$insert = $this->entity
->isNew();
parent::save($form, $form_state);
$form_state
->setRedirect('entity.paragraphs_library_item.collection');
if ($insert) {
$this->messenger
->addMessage($this
->t('Paragraph %label has been created.', [
'%label' => $this->entity
->label(),
]));
}
else {
$this->messenger
->addMessage($this
->t('Paragraph %label has been updated.', [
'%label' => $this->entity
->label(),
]));
}
}