def METHOD_NAME(self, init_meta: dict):
    """Inits an index builder instance from a dict with init meta."""
    # index param entity instance initialization
    module = importlib.import_module(init_meta["index_param"]["module"])
    class_ = getattr(module, init_meta["index_param"]["class"])
    index_params = class_(**init_meta["index_param"]["init_args"])
    # index builder instance initialization
    module = importlib.import_module(init_meta["builder"]["module"])
    class_ = getattr(module, init_meta["builder"]["class"])
    index_builder = class_(index_params=index_params, index_store=None)
    self.index_builder = index_builder