def duration(self) -> DurationRequestBuilder:
        """
        Provides operations to call the duration method.
        """
        from .duration.duration_request_builder import DurationRequestBuilder

        return DurationRequestBuilder(self.request_adapter, self.path_parameters)

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