src/ExternalURL.php
public function scaffoldFormField($title = null, $params = null)
    {
        $field = new ExternalURLField($this->name, $title);
        $field->setMaxLength($this->getSize());

        return $field;
    }
public function scaffoldFormField($title = null, $params = null)
    {
        $field = new ExternalURLField($this->name, $title);
        $field->setMaxLength($this->getSize());

        return $field;
    }
Scaffold the ExternalURLField for this ExternalURL