Nette\Forms\Controls\BaseControl::getLabelPrototype PHP Method

    public function getLabelPrototype()
    {
        return $this->label;
    }

 /**
  * @param \Nette\Forms\Controls\BaseControl $control
  */
 private function prepareControl(Controls\BaseControl $control)
 {
     $translator = $this->form->getTranslator();
     $control->setOption('rendered', FALSE);
     if ($control->isRequired()) {
         $control->getLabelPrototype()->addClass('required');
         $control->setOption('required', TRUE);
     }
     $el = $control->getControlPrototype();
     if ($placeholder = $control->getOption('placeholder')) {
         if (!$placeholder instanceof Html && $translator) {
             $placeholder = $translator->translate($placeholder);
         }
         $el->placeholder($placeholder);
     }
     if ($control->controlPrototype->type === 'email' && $control->getOption('input-prepend') === NULL) {
         $control->setOption('input-prepend', Html::el('i class="fa fa-fw fa-envelope"'));
     }
     if ($control->controlPrototype->type === 'password' && $control->getOption('input-prepend') === NULL) {
         $control->setOption('input-prepend', Html::el('i class="fa fa-fw fa-lock"'));
     }
     if ($control instanceof \Nette\Forms\ISubmitterControl) {
         $el->addClass('btn');
     } else {
         $control->setOption('pairContainer', $pair = Html::el('div'));
         $pair->id = $control->htmlId . '-pair';
         $pair->addClass('form-group');
         $label = $control->labelPrototype;
         if (static::isCheckbox($control)) {
             $label->addClass('checkbox');
         } elseif (!$control instanceof Controls\RadioList && !self::isCheckboxList($control)) {
             $label->addClass('control-label');
             if (!$control instanceof \Minetro\Forms\reCAPTCHA\ReCaptchaField) {
                 $el->addClass('form-control');
             }
         }
         if ($control->getOption('required', FALSE)) {
             $pair->addClass('required');
         }
         if ($control->errors) {
             $pair->addClass('has-error');
         }
         if ($prepend = $control->getOption('input-prepend')) {
             $prepend = Html::el('span', array('class' => 'input-group-addon'))->{$prepend instanceof Html ? 'add' : 'setText'}($prepend);
             $control->setOption('input-prepend', $prepend);
         }
         if ($append = $control->getOption('input-append')) {
             $append = Html::el('span', array('class' => 'input-group-addon'))->{$append instanceof Html ? 'add' : 'setText'}($append);
             $control->setOption('input-append', $append);
         }
     }
 }