code: public Component bugSummaryComponent(String str, BugInstance bug) {
          JLabel label = new JLabel();
          label.setFont(label.getFont().deriveFont(Driver.getFontSize()));
          label.setFont(label.getFont().deriveFont(Font.PLAIN));
          label.setForeground(Color.BLACK);
  
          label.setText(str);
  
          SourceLineAnnotation link = bug.getPrimarySourceLineAnnotation();
          if (link != null) {
              label.addMouseListener(new BugSummaryMouseListener(bug, label, link));
          }
  
          return label;
      }
docs: Creates bug summary component. If obj is a string will create a JLabel
  with that string as it's text and return it. If obj is an annotation will
  return a JLabel with the annotation's toString(). If that annotation is a
  SourceLineAnnotation or has a SourceLineAnnotation connected to it and
  the source file is available will attach a listener to the label.