[FlexJS] [MDL] Does minifab work?

[OmPrakash Muppirala]

I did not see an example for the minifab button, but I do see the boolean
property available.  When I set it to true, the button shows up as a normal
rectangular shaped button.

Is this a bug or am I doing something wrong?

Here is what i am trying:

<mdl:Button colored="true" minifab="true">
                <mdl:materialIcon>
                    <js:I className="fa fa-twitter" />
                </mdl:materialIcon>
</mdl:Button>

Thanks,
Om