android – Move worth as reference in Kolin

I wish to convert code Goal C to Kotlin multiplatform
That is Goal C code

{
    NSFileManager *fileManager = [[NSFileManager alloc] init];

    BOOL isDir;
    BOOL exists = [fileManager fileExistsAtPath:path isDirectory:&isDir];
    BOOL success = false;

    if (isDir && exists) {
        NSURL *pathUrl = [NSURL fileURLWithPath:path];
        NSError *error = nil;
        success = [pathUrl setResourceValue:isExcluded
                                     forKey:NSURLIsExcludedFromBackupKey
                                      error:&error];

        if (!success) {
            NSLog(@"Couldn't exclude AsyncStorage dir from backup %@", error);
        }
    }
    return success;
}

In above code variable isDir use & when cross to perform fileExistsAtPath
So how can I exploit isDir like that in Kotlin. I do know that is
address-of unary operator