public static function findByResource($resourceName, $optParams=[])
    {
        $optParams = ($optParams) ? $optParams : [
            'personFields' => self::$personFields,
        ];
        
        self::$person = self::getService()->people->get($resourceName, $optParams);
        
        self::$resourceName = $resourceName;
        
        return new self;
    }