Making Google Visualization - Annotation Chart To Work In GWT

I am using the newly released Annotation Chart in gwt by calling native javascript, and what I got until now is to have it display the example chart as it is, but the problem I am

Solution 1:

To answer my own question, here is the GWT wrapper that I wrote for this chart. It works and supports all the options, and can be used in the same way as you would use other google charts in GWT.