Strophe.connection.sendPresence not there

[robcross1977]

I tried to make my own branch and do a pull request but I am not authorized apparently. Just paste this code above sendIQ please:

/** Function: sendPresence
* Helper function to send presence stanzas. The main benefit is for
* sending presence stanzas for which you expect a responding presence
* stanza with the same id (for example when leaving a chat room).
*
* Parameters:
* (XMLElement) elem - The stanza to send.
* (Function) callback - The callback function for a successful request.
* (Function) errback - The callback function for a failed or timed
* out request. On timeout, the stanza will be null.
* (Integer) timeout - The time specified in milliseconds for a
* timeout to occur.
*
* Returns:
* The id used to send the presence.
*/
sendPresence: function(elem, callback, errback, timeout) {
var timeoutHandler = null;
var that = this;
if (typeof(elem.tree) === "function") {
elem = elem.tree();
}
var id = elem.getAttribute('id');
if (!id) { // inject id if not found
id = this.getUniqueId("sendPresence");
elem.setAttribute("id", id);
}

    if (typeof callback === "function" || typeof errback === "function") {
        var handler = this.addHandler(function (stanza) {
            // remove timeout handler if there is one
            if (timeoutHandler) {
                that.deleteTimedHandler(timeoutHandler);
            }
            var type = stanza.getAttribute('type');
            if (type === 'error') {
                if (errback) {
                    errback(stanza);
                }
            } else if (callback) {
                callback(stanza);
            }
        }, null, 'presence', null, id);

        // if timeout specified, set up a timeout handler.
        if (timeout) {
            timeoutHandler = this.addTimedHandler(timeout, function () {
                // get rid of normal handler
                that.deleteHandler(handler);
                // call errback on timeout with null stanza
                if (errback) {
                    errback(null);
                }
                return false;
            });
        }
    }
    this.send(elem);
    return id;
},