@classmethod
def _GetResolverHelper(cls, type_indicator):
    """Retrieves the path specification resolver helper for the specified type.

    Args:
      type_indicator (str): type indicator.

    Returns:
      ResolverHelper: a resolver helper.
    """
    if not cls._resolver_helpers_manager:
        from dfvfs.resolver_helpers import manager
        cls._resolver_helpers_manager = manager.ResolverHelperManager
    return cls._resolver_helpers_manager.GetHelper(type_indicator)
