'Returns a new dict.
Each key of new dict is prepended with "X-Container-Meta-".'

@staticmethod
def _build_meta_headers(obj_type, meta_props):

    if (meta_props is None):
        return {}
    return dict(((((('X-' + obj_type.title()) + '-Meta-') + k), v) for (k, v) in meta_props.items()))
