public function __isset($name)
    {
        return isset($this->children[$name]) && !is_null($this->children[$name]->getValue());
    }
public function __isset($name)
    {
        return isset($this->children[$name]) && !is_null($this->children[$name]->getValue());
    }
public function __isset ( $ name ) { return isset ( $ this -> children [ $ name ] ) && ! is_null ( $ this -> children [ $ name ] -> getValue ( ) ) ; }
Check if child set

@param string $name Child name

@return bool
Check if child set