Nextras\Forms\Controls\Fragments\TemplateControlTrait::getTemplate PHP Метод

    public function getTemplate()
    {
        if ($this->template === NULL) {
            $value = $this->createTemplate();
            if (!$value instanceof ITemplate && $value !== NULL) {
                $class2 = get_class($value);
                $class = get_class($this);
                throw new Nette\UnexpectedValueException("Object returned by {$class}::createTemplate() must be instance of Nette\\Application\\UI\\ITemplate, '{$class2}' given.");
            }
            $this->template = $value;
        }
        return $this->template;
    }