code: def _ExpandUsersVariablePathSegments(
        cls, path_segments, path_separator, user_accounts):
      
      if not path_segments:
        return []
  
      path_segments_lower = [
          path_segment.lower() for path_segment in path_segments]
  
      if path_segments_lower[0] in ('%%users.homedir%%', '%%users.userprofile%%'):
        return cls._ExpandUsersHomeDirectoryPathSegments(
            path_segments, path_separator, user_accounts)
  
      path_expansions = cls._PATH_EXPANSIONS_PER_USERS_VARIABLE.get(
          path_segments[0], None)
  
      if path_expansions:
        expanded_paths = []
  
        for path_expansion in path_expansions:
          expanded_path_segments = list(path_expansion)
          expanded_path_segments.extend(path_segments[1:])
  
          paths = cls._ExpandUsersVariablePathSegments(
              expanded_path_segments, path_separator, user_accounts)
          expanded_paths.extend(paths)
  
        return expanded_paths
  
      if cls._IsWindowsDrivePathSegment(path_segments[0]):
        path_segments[0] = ''
  
      # TODO: add support for %%users.username%%
      path = path_separator.join(path_segments)
      return [path]
docs: Expands path segments with a users variable, e.g. %%users.homedir%%.
  
      Args:
        path_segments (list[str]): path segments.
        path_separator (str): path segment separator.
        user_accounts (list[UserAccountArtifact]): user accounts.
  
      Returns:
        list[str]: paths for which the users variables have been expanded.