def by_group_id1(self,group_id1: str) -> GroupItemRequestBuilder:
        """
        Provides operations to manage the groups property of the microsoft.graph.termStore.store entity.
        param group_id1: The unique identifier of group
        Returns: GroupItemRequestBuilder
        """
        if group_id1 is None:
            raise TypeError("group_id1 cannot be null.")
        from .item.group_item_request_builder import GroupItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["group%2Did1"] = group_id1
        return GroupItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the groups property of the microsoft.graph.termStore.store entity.
        param group_id1: The unique identifier of group
        Returns: GroupItemRequestBuilder
        
msgraph/generated/groups/item/sites/item/term_stores/item/groups/groups_request_builder.py