new Updater()
An updater provides methods to update a topic on the server with a new supplied value, like Session.topics#update, but within the context of an exclusive TopicUpdateHandler registration.
If the update is successful it will call the result's success callback, and any sessions subscribed to the same
topic will be notified of a topic update.
An updater may only update topics at or below the registration path of the TopicUpdateHandler from which it was produced.
The result will fail if the update was not successful. It is necessary for the topic to exist, and that the value type must be valid for the topic, for example a topic added with Metadata.Integer cannot accept a string value. Updates will also fail if the TopicUpdateHandler this updater was created from is in a
standbyor
closedstate.
Example
updater.update('foo/bar', 123).then(function() {
// Update successful
}, function(err) {
// Update failed
});