Github user afs commented on a diff in the pull request:
https://github.com/apache/jena/pull/337#discussion_r159238850
--- Diff: jena-arq/src/main/java/org/apache/jena/sparql/util/Context.java
---
@@ -37,7 +35,7 @@
public static final Context emptyContext = new Context(true) ;
protected Map<Symbol, Object> context = new
ConcurrentHashMap<>() ;
- protected List<Consumer<Symbol>> callbacks = new ArrayList<>() ;
+
--- End diff --
+1 to getting rid of callbacks! (wasn't a good idea at the time...)
---
