Gantt chart support in web components

[Chukkrit Visitsaktavorn]

Hi, I'm working with polymer project with using Google chart api web components. 

But there is not enough information in google-chart web components document page which I require to implement in my project.

https://www.webcomponents.org/element/GoogleWebComponents/google-chart

And I figure out that google charts api is now provide gantt chart that I really need for my project

according to https://google-developers.appspot.com/chart/interactive/docs/gallery and

https://www.webcomponents.org/element/GoogleWebComponents/google-chart/google-chart

I'm not sure that is google-chart web component support gantt chart yet and how to use it :( ?

Please give any suggestion about google-chart web components.

Thank you.