/**
* {@inheritdoc}
*/
public function submitOptionsForm(&$form, FormStateInterface $form_state)
{
parent::submitOptionsForm($form, $form_state);
$subform = $form['entity_reference_selection'];
$subform_state = new ViewsHandlerFormState($form_state);
$entity_reference_selection_selector = $this->getPluginSelector($form_state);
$entity_reference_selection_selector->submitSelectorForm($subform, $subform_state);
// Views magically sets all submitted form values as plugin options. We must
// therefore unset any values submitted by the entity reference selection
// plugin form, and add the ID and configuration of the selected plugin.
$entity_reference_selection = $entity_reference_selection_selector->getSelectedPlugin();
$form_state->setValue(['options', 'entity_reference_selection_id'], $entity_reference_selection->getPluginId());
$entity_reference_selection_handler_settings = $form_state->getValue(['options', 'entity_reference_selection', 'container', 'plugin_form']);
$form_state->setValue(['options', 'entity_reference_selection_handler_settings'], $entity_reference_selection_handler_settings);
$form_state->unsetValue(['options', 'entity_reference_selection']);
}
