code: @Deprecated
      public static String resolveTopic(final File rootPath, final String relativePath) {
          return setFragment(resolve(rootPath, stripFragment(relativePath)).getPath(), getFragment(relativePath));
      }
docs: Normalize topic path base on current directory and href value, by
  replacing "\\" and "\" with {@link File#separator}, and removing ".", ".."
  from the file path, with no change to substring behind "#".
  
  @param rootPath root directory path
  @param relativePath relative path
  @return resolved topic file