protected function addDropColumn(&$property, $name)
    {
        if (is_array($name)) {
            $property .= sprintf('%s([%s])', $this->getPropertyBase('dropColumn'), implode(',', Helpers::wrapItems($name)));
        } else {
            $property .= sprintf("%s('%s')", $this->getPropertyBase('dropColumn'), $name);
        }

        return $this;
    }