ColaboradorPanel.java

public class ColaboradorPanel extends Composite {
  
     public interface Binder extends UiBinder<Widget, ColaboradorPanel> {
     }
     private static Binder uiBinder = GWT.create(Binder.class);
 
     public ColaboradorPanel() {

          initWidget(uiBinder.createAndBindUi(this)); 
     } 
}