code: protected final DefaultOverlayable findOverlayable(JComponent targetComponent) {
  
          // Find overlayable in tart component container
          final Container parent = targetComponent.getParent();
  
          if ((parent != null) && (parent instanceof DefaultOverlayable)) {
  
              return (DefaultOverlayable) parent;
          }
  
          return null;
      }
docs: Tries to find a <code>DefaultOverlayable</code> given a target component.
  
  @param targetComponent
  the target component.
  @return the associated <code>Overlayable</code> if found and <code>null</code> in other case.