private function addAutocompleteFields(Fieldset $fieldset)
{
$fieldset->addField('is_used_in_autocomplete', 'select', ['name' => 'is_used_in_autocomplete', 'label' => __('Used in autocomplete'), 'values' => $this->booleanSource->toOptionArray()], 'is_used_in_spellcheck');
$fieldset->addField('is_displayed_in_autocomplete', 'select', ['name' => 'is_displayed_in_autocomplete', 'label' => __('Display in autocomplete'), 'values' => $this->booleanSource->toOptionArray()], 'is_used_in_autocomplete');
return $this;
}