scene2d - Make content of HorizontalGroup Wrap to the next line in Libgdx -

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i use libgdx's scene2d built-in ui library make ui in game . want use component div in html , add textbutton i've try use horizontalgroup when textbuttons long text exceed area . want set bounds actor (horizontalgroup) make limited

here code 

myfunction(){    horizontalgroup group=new horizontalgroup();          (...) {               button =new textbutton(...);              group.addactor(button);             group.setdebug(true);             group.setbounds(5,200,200f,200f); } stage.addactor(group); }

and result my first game

any please


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