def cos(self) -> CosRequestBuilder:
        """
        Provides operations to call the cos method.
        """
        from .cos.cos_request_builder import CosRequestBuilder

        return CosRequestBuilder(self.request_adapter, self.path_parameters)

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