Made the visitChildren method in Node public so that it can be called from extension objects.
Made the visitChildren method in Node public so that it can be called from
extension objects.

blue-systems-group/project.maybe.polyglot,blue-systems-group/project.maybe.polyglot,xcv58/polyglot,liujed/polyglot-eclipse,blue-systems-group/project.maybe.polyglot,blue-systems-group/project.maybe.polyglot,liujed/polyglot-eclipse,liujed/polyglot-eclipse,xcv58/polyglot,xcv58/polyglot,liujed/polyglot-eclipse,xcv58/polyglot