async def post(self,body: RejectPostRequestBody, request_configuration: Optional[RequestConfiguration[QueryParameters]] = None) -> None:
        """
        Enable a bot to reject an incoming call. The incoming call request can be an invite from a participant in a group call or a peer-to-peer call. If an invite to a group call is received, the notification will contain the chatInfo and meetingInfo parameters. The bot is expected to answer or reject the call before the call times out. The current timeout value is 15 seconds. This API does not end existing calls that have already been answered. Use delete call to end a call.
        param body: The request body
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: None
        Find more info here: https://learn.microsoft.com/graph/api/call-reject?view=graph-rest-1.0
        """
        if body is None:
            raise TypeError("body cannot be null.")
        request_info = self.to_post_request_information(
            body, request_configuration
        )
        from .....models.o_data_errors.o_data_error import ODataError

        error_mapping: dict[str, type[ParsableFactory]] = {
            "XXX": ODataError,
        }
        if not self.request_adapter:
            raise Exception("Http core is null") 
        return await self.request_adapter.send_no_response_content_async(request_info, error_mapping)

        Enable a bot to reject an incoming call. The incoming call request can be an invite from a participant in a group call or a peer-to-peer call. If an invite to a group call is received, the notification will contain the chatInfo and meetingInfo parameters. The bot is expected to answer or reject the call before the call times out. The current timeout value is 15 seconds. This API does not end existing calls that have already been answered. Use delete call to end a call.
        param body: The request body
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: None
        Find more info here: https://learn.microsoft.com/graph/api/call-reject?view=graph-rest-1.0
        
msgraph/generated/communications/calls/item/reject/reject_request_builder.py