From 26bb6b79510edcedaf386c8e0d011b5b9e682bf6 Mon Sep 17 00:00:00 2001
From: Richard Eckart de Castilho <richard.eckart@gmail.com>
Date: Wed, 18 Aug 2021 11:19:13 +0200
Subject: [PATCH] #174 - FSes that are only transitively referenced cannot be
 serialized (#179)

- Only generate new ID if ID is actually missing
---
 cassis/cas.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cassis/cas.py b/cassis/cas.py
index 430dc00..cf27142 100644
--- a/cassis/cas.py
+++ b/cassis/cas.py
@@ -590,7 +590,7 @@ def _find_all_fs(self, generate_missing_ids: bool = False) -> Iterable[FeatureSt
         ts = self.typesystem
         while openlist:
             fs = openlist.pop(0)
-            if generate_missing_ids:
+            if generate_missing_ids and fs.xmiID is None:
                 fs.xmiID = self._get_next_xmi_id()
             all_fs[fs.xmiID] = fs