Common/View/SaleView.php
public function setTranslations(array $translations)
    {
        foreach ($translations as $key => $string) {
            if (!(is_string($string) && !empty($string))) {
                throw new \InvalidArgumentException("Invalid translation for key '$key'.");
            }
        }

        $this->translations = array_replace($this->getDefaultTranslations(), $translations);
    }
public function setTranslations(array $translations)
    {
        foreach ($translations as $key => $string) {
            if (!(is_string($string) && !empty($string))) {
                throw new \InvalidArgumentException("Invalid translation for key '$key'.");
            }
        }

        $this->translations = array_replace($this->getDefaultTranslations(), $translations);
    }
Sets the translations.

@param array $translations