Hello, I am new to GXT and wondering how to create a TextButton with Icon (Open folder image)?

I know if i wants to use my custom icon then i would have to use ClientBudle and Image resource but if i want to use EXISTING Icon from blue them then i am assuming there will be already a ImageResource interface that i can use. Is that right?

I am assuming that code may be something like below:
TextButton b = new TextButton();
b.setIcon(Blue theam Image resource class with method to specific icon);

Kindly point me in right direction.

Thanks in advance.

Best regards