public function filter($input) : bool
    {
        if (empty($this->value)) {
            return true;
        }

        return $this->value === $input;
    }
public function filter($input) : bool
    {
        if (empty($this->value)) {
            return true;
        }

        return $this->value === $input;
    }
@param mixed $input

@return bool