public function isValid($value)
    {
        try {
            $this->validator->check($value);
            $this->errorMessage = '';
            return true;
        } catch (ValidationException $e) {
            $this->errorMessage = (empty($this->label) ? '' : "{$this->label}: ") . $e->getMessage();
            return false;
        }
    }
public function isValid($value)
    {
        try {
            $this->validator->check($value);
            $this->errorMessage = '';
            return true;
        } catch (ValidationException $e) {
            $this->errorMessage = (empty($this->label) ? '' : "{$this->label}: ") . $e->getMessage();
            return false;
        }
    }
{@inheritdoc}