private boolean tryIgnoreResult() {
        if (!shouldIgnoreResult()) {
            return false;
        }
        if (reply == null || !reply.hasErrors()) {
            return false;
        }
        setReply(new EmptyReply());
        trace.trace(TraceLevel.SPLIT_MERGE, "Ignoring errors in reply.");
        return true;
    }
If a reply has been set containing an error, and {@link #shouldIgnoreResult()} returns <code>true</code>, this method
replaces that reply with one that has no error.

@return Whether or not the reply was replaced.
messagebus/src/main/java/com/yahoo/messagebus/routing/RoutingNode.java