def by_virtual_event_townhall_id(self,virtual_event_townhall_id: str) -> VirtualEventTownhallItemRequestBuilder:
        """
        Provides operations to manage the townhalls property of the microsoft.graph.virtualEventsRoot entity.
        param virtual_event_townhall_id: The unique identifier of virtualEventTownhall
        Returns: VirtualEventTownhallItemRequestBuilder
        """
        if virtual_event_townhall_id is None:
            raise TypeError("virtual_event_townhall_id cannot be null.")
        from .item.virtual_event_townhall_item_request_builder import VirtualEventTownhallItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["virtualEventTownhall%2Did"] = virtual_event_townhall_id
        return VirtualEventTownhallItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the townhalls property of the microsoft.graph.virtualEventsRoot entity.
        param virtual_event_townhall_id: The unique identifier of virtualEventTownhall
        Returns: VirtualEventTownhallItemRequestBuilder
        
msgraph/generated/solutions/virtual_events/townhalls/townhalls_request_builder.py