my $urlSelf = $device->{'self'} ;
    $selfResults = $browser->get($urlSelf) ;
    if ( $selfResults ->is_success )
    {
        my $deviceDetails = decode_json( $selfResults->content ) ;
        if ( defined $deviceDetails -> {'cpu_count'} )
        {
            print $deviceDetails -> {'cpu_count'} , ",";
        } else {
            print "(no cpu count), " ;
        }
        if (defined $deviceDetails->{'cpu'}  )
        {
            # CPU info is an ARRAY - let's just report on the first one
            # Also, CPU model can contain a comma, so enclose in quotes
            print '"';
            print $deviceDetails->{'cpu'}->[0]->{'cpu_model'};
            print '"';
        } else {
            print "(No CPU Model)";
        }
        … and so on …
    }