def sum_if(self) -> SumIfRequestBuilder:
        """
        Provides operations to call the sumIf method.
        """
        from .sum_if.sum_if_request_builder import SumIfRequestBuilder

        return SumIfRequestBuilder(self.request_adapter, self.path_parameters)

        Provides operations to call the sumIf method.
        
msgraph/generated/drives/item/items/item/workbook/functions/functions_request_builder.py