async def get(self,request_configuration: Optional[RequestConfiguration[ParentSectionGroupRequestBuilderGetQueryParameters]] = None) -> Optional[SectionGroup]:
        """
        The section group that contains the section group. Read-only.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[SectionGroup]
        """
        request_info = self.to_get_request_information(
            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") 
        from .........models.section_group import SectionGroup

        return await self.request_adapter.send_async(request_info, SectionGroup, error_mapping)

        The section group that contains the section group. Read-only.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[SectionGroup]
        
msgraph/generated/groups/item/sites/item/onenote/section_groups/item/parent_section_group/parent_section_group_request_builder.py