BasicSettingsForm::submitForm

public BasicSettingsForm::submitForm(array &$form, FormStateInterface $form_state)

public function submitForm(array &$form, FormStateInterface $form_state) {
  $this->config('views.settings')
    ->set('ui.show.master_display', $form_state->getValue('ui_show_master_display'))
    ->set('ui.show.advanced_column', $form_state->getValue('ui_show_advanced_column'))
    ->set('ui.show.display_embed', $form_state->getValue('ui_show_display_embed'))
    ->set('ui.exposed_filter_any_label', $form_state->getValue('ui_exposed_filter_any_label'))
    ->set('ui.always_live_preview', $form_state->getValue('ui_always_live_preview'))
    ->set('ui.show.preview_information', $form_state->getValue('ui_show_preview_information'))
    ->set('ui.show.sql_query.where', $form_state->getValue('ui_show_sql_query_where'))
    ->set('ui.show.sql_query.enabled', $form_state->getValue('ui_show_sql_query_enabled'))
    ->set('ui.show.performance_statistics', $form_state->getValue('ui_show_performance_statistics'))
    ->set('ui.show.additional_queries', $form_state->getValue('ui_show_additional_queries'))
    ->save();

  parent::submitForm($form, $form_state);
}