code: @SuppressWarnings("static-method")
  	protected AbstractSuperTypeSelectionDialog<?> createSuperClassSelectionDialog(
  			Shell parent, IRunnableContext context, IJavaProject project, SarlSpecificTypeSelectionExtension extension,
  			boolean multi) {
  		return null;
  	}
docs: Create an instanceof the super-class selection dialog.
  
  @param parent the parent.
  @param context the execution context.
  @param project the Java project.
  @param extension the extension to give to the dialog box.
  @param multi indicates if the selection could be done on multiple elements.
  @return the dialog, or <code>null</code> for using the default dialog box.