public MainFrame put(Widget widget) {
		widget.addTo(user);
		content = widget != null ? widget.getID() : -1;
		this.sendElement();
		return this;
	}
public MainFrame put ( Widget widget ) { widget . addTo ( user ) ; content = widget != null ? widget . getID ( ) : - 1 ; this . sendElement ( ) ; return this ; }
Adds widget to page

@param widget Widget/container to present
@return This instance for chaining