private void visitComments(CompilationUnit node) {
		List comments = ((CompilationUnit)node).getCommentList();
		if (comments != null) {
			for (int i=0; i < comments.size(); ++i) {
				Comment comment = (Comment) comments.get(i);
				if (comment != null && comment.getParent() == null) 
					comment.accept(this);
			}
		}
	}