def by_set_id1(self,set_id1: str) -> SetItemRequestBuilder:
        """
        Provides operations to manage the sets property of the microsoft.graph.termStore.group entity.
        param set_id1: The unique identifier of set
        Returns: SetItemRequestBuilder
        """
        if set_id1 is None:
            raise TypeError("set_id1 cannot be null.")
        from .item.set_item_request_builder import SetItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["set%2Did1"] = set_id1
        return SetItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the sets property of the microsoft.graph.termStore.group entity.
        param set_id1: The unique identifier of set
        Returns: SetItemRequestBuilder
        
msgraph/generated/sites/item/term_stores/item/sets/item/parent_group/sets/sets_request_builder.py