/**
* Overrides \Drupal\views\Plugin\views\SqlBase::buildOptionsForm().
*/
public function buildOptionsForm(&$form, &$form_state)
{
parent::buildOptionsForm($form, $form_state);
$form['quantity'] = array('#type' => 'number', '#title' => t('Number of pager links visible'), '#description' => t('Specify the number of links to pages to display in the pager.'), '#default_value' => $this->options['quantity']);
$form['tags']['first'] = array('#type' => 'textfield', '#title' => t('First page link text'), '#default_value' => $this->options['tags']['first'], '#weight' => -10);
$form['tags']['last'] = array('#type' => 'textfield', '#title' => t('Last page link text'), '#default_value' => $this->options['tags']['last'], '#weight' => 10);
}
