lib/dataprovider.js
function update(itemName, isSnapshot, data) {
		var message, id = getIdFromItemName(itemName);
		message = proto.writeUpdate(id, itemName, isSnapshot, data);
		notify(message);
		return that;
	}
function update(itemName, isSnapshot, data) {
		var message, id = getIdFromItemName(itemName);
		message = proto.writeUpdate(id, itemName, isSnapshot, data);
		notify(message);
		return that;
	}
function update ( itemName , isSnapshot , data ) { var message , id = getIdFromItemName ( itemName ) ; message = proto . writeUpdate ( id , itemName , isSnapshot , data ) ; notify ( message ) ; return that ; }
Sends an update for a particular item to the remote LS proxy.

@param {String} itemName the item name
@param {Boolean} isSnapshot is it a snapshot?
@param {Object} data an associative array of strings
that represents the data to be published
Sends an update for a particular item to the remote LS proxy .