Revert set conversion

opentripplanner · Apr 2, 2024 · a312d2a · a312d2a
1 parent f596432
commit a312d2a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/main/java/org/opentripplanner/openstreetmap/model/OSMWithTags.java b/src/main/java/org/opentripplanner/openstreetmap/model/OSMWithTags.java
@@ -533,7 +533,7 @@ public Set<String> getMultiTagValues(Set<String> refTags) {
       .flatMap(v -> Arrays.stream(v.split(";")))
       .map(String::strip)
       .filter(v -> !v.isBlank())
-      .collect(Collectors.toSet());
+      .collect(Collectors.toUnmodifiableSet());
   }
 
   public OsmProvider getOsmProvider() {