public function setMinLength(string $elementName, int $minLength, string $errorMessage = null): \IvoPetkov\BearFrameworkAddons\Form\Constraints
    {
        if ($errorMessage === null) {
            $errorMessage = sprintf(__('ivopetkov.form.The length of this field must be atleast %s characters.'), $minLength);
        }
        $this->data[] = ['minLength', $errorMessage, $elementName, $minLength];
        return $this;
    }