How to add a new record into Calendar using CalDAV ?
I can get all my current recors from Thunderbird Lightning calendar as array, by that code:

```
require_once 'class.CalDavClient.php';

$cal = new CalDAVClient(
'###',
'###',
'###'
);
if ( isset($options["PROPFIND"]) ) {
    $cal->SetDepth(1);
    $folder_xml = $cal->DoXMLRequest(
    "PROPFIND",
    '<?xml version="1.0" encoding="utf-8" ?>
        <propfind xmlns="DAV:"><prop><getcontentlength/><getcontenttype/>
<resourcetype/><getetag/></prop></propfind>'

    );
}

$date_from = date('Ymd', mktime(0, 0, 0, date('m')-3, date('d'), date('Y')));
$calendar_events = CalDAVClient::normalize_events($cal->GetEvents($date_from, 
"20991212"), $row['calendar_Title']);

print_r($calendar_events);

```

But how i can add new event ? I looked for documentation, but cant find anything about that.