public function hasSiblings()
{
if (is_bool($this->hasSiblings)) {
if ($this->hasSiblings and empty($this->siblings) or !$this->hasSiblings and !empty($this->siblings)) {
return $this->getDao()->hasSiblings();
} else {
return $this->hasSiblings;
}
}
return $this->getDao()->hasSiblings();
}