async def post(self,body: ReferenceCreate, request_configuration: Optional[RequestConfiguration[QueryParameters]] = None) -> None:
        """
        Add a member to a security or Microsoft 365 group. When using the API to add multiple members in one request, you can add up to only 20 members.  The following table shows the types of members that can be added to either security groups or Microsoft 365 groups.
        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/group-post-members?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)

        Add a member to a security or Microsoft 365 group. When using the API to add multiple members in one request, you can add up to only 20 members.  The following table shows the types of members that can be added to either security groups or Microsoft 365 groups.
        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/group-post-members?view=graph-rest-1.0
        
msgraph/generated/groups/item/members/ref/ref_request_builder.py