def by_participant_id(self,participant_id: str) -> ParticipantItemRequestBuilder:
        """
        Provides operations to manage the participants property of the microsoft.graph.call entity.
        param participant_id: The unique identifier of participant
        Returns: ParticipantItemRequestBuilder
        """
        if participant_id is None:
            raise TypeError("participant_id cannot be null.")
        from .item.participant_item_request_builder import ParticipantItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["participant%2Did"] = participant_id
        return ParticipantItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the participants property of the microsoft.graph.call entity.
        param participant_id: The unique identifier of participant
        Returns: ParticipantItemRequestBuilder
        
msgraph/generated/communications/calls/item/participants/participants_request_builder.py