code: public static String getStaticFixedURLForTopicNode(final ITopicNode topicNode) {
          if (topicNode.getTopicType() == TopicType.REVISION_HISTORY) {
              return "appe-Revision_History";
          } else if (topicNode.getTopicType() == TopicType.LEGAL_NOTICE) {
              return "Legal_Notice";
          } else if (topicNode.getTopicType() == TopicType.AUTHOR_GROUP) {
              return "Author_Group";
          } else if (topicNode.getTopicType() == TopicType.ABSTRACT) {
              return "Abstract";
          } else {
              return null;
          }
      }
docs: Generate the fixed url for a static topic node.
  
  @param topicNode The topic node to generate the static fixed url for.
  @return The fixed url for the node.