protected function init()
{
// System setting --> allows selection of a single value
$this->metric = $this->createMetricSetting();
// System setting --> allows selection of multiple values
$this->browsers = $this->createBrowsersSetting();
// System setting --> textarea
$this->description = $this->createDescriptionSetting();
// System setting --> textarea
$this->password = $this->createPasswordSetting();
}