public function __isset(string $name): bool
    {
        $valueName = $this->getValueName($name);

        return (isset($valueName) && !is_null($this->getValue($valueName))) || isset($this->data[$name]);
    }
public function __isset(string $name): bool
    {
        $valueName = $this->getValueName($name);

        return (isset($valueName) && !is_null($this->getValue($valueName))) || isset($this->data[$name]);
    }
public function __isset ( string $ name ) : bool { $ valueName = $ this -> getValueName ( $ name ) ; return ( isset ( $ valueName ) && ! is_null ( $ this -> getValue ( $ valueName ) ) ) || isset ( $ this -> data [ $ name ] ) ; }
Check whether a value is set or not
Check whether a value is set or not