def gamma_ln(self) -> GammaLnRequestBuilder:
        """
        Provides operations to call the gammaLn method.
        """
        from .gamma_ln.gamma_ln_request_builder import GammaLnRequestBuilder

        return GammaLnRequestBuilder(self.request_adapter, self.path_parameters)

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