def npv(self) -> NpvRequestBuilder:
        """
        Provides operations to call the npv method.
        """
        from .npv.npv_request_builder import NpvRequestBuilder

        return NpvRequestBuilder(self.request_adapter, self.path_parameters)

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