Serialize groupSize if set

1 files changed, 1 insertions, 0 deletions

diff --git a/config-provisioning/src/main/java/com/yahoo/config/provision/IntRange.java b/config-provisioning/src/main/java/com/yahoo/config/provision/IntRange.java
index 4a2a472a1ad..f24e86c96ef 100644
--- a/config-provisioning/src/main/java/com/yahoo/config/provision/IntRange.java
+++ b/config-provisioning/src/main/java/com/yahoo/config/provision/IntRange.java
@@ -27,6 +27,7 @@ public class IntRange {
     /** Returns the maximum value which is in this range, or empty if it is open upwards. */
     public OptionalInt to() { return to; }
 
+    /** Returns true if both from and to is open (not present). */
     public boolean isEmpty() {
         return from.isEmpty() && to.isEmpty();
     }