public function addOnePinnedProgram(array &$form, FormStateInterface $form_state) {
    $num_pinned_programs = $form_state->get('num_pinned_programs');
    $add_button = $num_pinned_programs + 1;
    $form_state->set('num_pinned_programs', $add_button);
    $form_state->setRebuild();
  }