def erf(self) -> ErfRequestBuilder:
        """
        Provides operations to call the erf method.
        """
        from .erf.erf_request_builder import ErfRequestBuilder

        return ErfRequestBuilder(self.request_adapter, self.path_parameters)

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