async def get(self,request_configuration: Optional[RequestConfiguration[AdditionalSourcesRequestBuilderGetQueryParameters]] = None) -> Optional[DataSourceCollectionResponse]:
        """
        Get the list of additional sources associated with an eDiscovery search.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[DataSourceCollectionResponse]
        Find more info here: https://learn.microsoft.com/graph/api/security-ediscoverysearch-list-additionalsources?view=graph-rest-1.0
        """
        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.security.data_source_collection_response import DataSourceCollectionResponse

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

        Get the list of additional sources associated with an eDiscovery search.
        param request_configuration: Configuration for the request such as headers, query parameters, and middleware options.
        Returns: Optional[DataSourceCollectionResponse]
        Find more info here: https://learn.microsoft.com/graph/api/security-ediscoverysearch-list-additionalsources?view=graph-rest-1.0
        
msgraph/generated/security/cases/ediscovery_cases/item/searches/item/additional_sources/additional_sources_request_builder.py