refresh();
WidgetInfo button_1 = getObjectByName("button_1");
WidgetInfo button_2 = getObjectByName("button_2");
// do move
Position position = getPosition(container, "topbutton");
position.command_MOVE(button_2, button_1);
assertXML(
"<ui:UiBinder>",
" <t:MyContainer>",
" <t:topbutton text='B'>",
" <g:Button wbp:name='button_2' text='2'/>",