/**
* Validate instance
* @see `Base_Object::is_valid()`
* @return bool Valid (TRUE) / Invalid (FALSE)
*/
public function is_valid()
{
$ret = parent::is_valid();
if ($ret) {
// Check required component properties
$props = array_merge($this->props_required_base, $this->props_required);
foreach ($props as $prop) {
if (!isset($this->{$prop}) || empty($this->{$prop})) {
$ret = false;
break;
}
}
}
return $ret;
}
