/**
* Implements JsonSerializable::jsonSerialize().
*/
public function jsonSerialize()
{
$valid = !isset($this->preferredStartingPosition) || $this->validatePreferredStartingPosition($this->preferredStartingPosition);
if (!$valid) {
return NULL;
}
return parent::jsonSerialize();
}
/**
* Implements JsonSerializable::jsonSerialize().
*/
public function jsonSerialize()
{
$valid = !isset($this->initialAlpha) || $this->validateInitialAlpha($this->initialAlpha);
if (!$valid) {
return NULL;
}
return parent::jsonSerialize();
}
/**
* Implements __construct().
*/
public function __construct()
{
return parent::__construct('appear');
}
