code: def _GetResolverHelper(cls, type_indicator):
      
      if not cls._resolver_helpers_manager:
        # Delay the import of the resolver helpers manager to prevent circular
        # imports.
        from dfvfs.resolver_helpers import manager
  
        cls._resolver_helpers_manager = manager.ResolverHelperManager
  
      return cls._resolver_helpers_manager.GetHelper(type_indicator)
docs: Retrieves the path specification resolver helper for the specified type.
  
      Args:
        type_indicator (str): type indicator.
  
      Returns:
        ResolverHelper: a resolver helper.