def len(self) -> LenRequestBuilder:
        """
        Provides operations to call the len method.
        """
        from .len.len_request_builder import LenRequestBuilder

        return LenRequestBuilder(self.request_adapter, self.path_parameters)

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