+ | (Pxp_types.Error _) as e -> error e
+ | (Pxp_types.At _) as e -> error e
+ | (Pxp_types.Validation_error _) as e -> error e
+ | (Pxp_types.WF_error _) as e -> error e
+ | (Pxp_types.Namespace_error _) as e -> error e
+ | (Pxp_types.Character_not_supported) as e -> error e