code: def get_absolute_path(cls, root: str, path: str) -> str:
          
          abspath = os.path.abspath(os.path.join(root, path))
          return abspath
docs: Returns the absolute location of ``path`` relative to ``root``.
  
          ``root`` is the path configured for this `StaticFileHandler`
          (in most cases the ``static_path`` `Application` setting).
  
          This class method may be overridden in subclasses.  By default
          it returns a filesystem path, but other strings may be used
          as long as they are unique and understood by the subclass's
          overridden `get_content`.
  
          .. versionadded:: 3.1