Less Optional

1 files changed, 8 insertions, 2 deletions

diff --git a/config-provisioning/src/main/java/com/yahoo/config/provision/CloudAccount.java b/config-provisioning/src/main/java/com/yahoo/config/provision/CloudAccount.java
index 3609ea4af88..ac237cb1232 100644
--- a/config-provisioning/src/main/java/com/yahoo/config/provision/CloudAccount.java
+++ b/config-provisioning/src/main/java/com/yahoo/config/provision/CloudAccount.java
@@ -6,14 +6,20 @@ import ai.vespa.validation.PatternedStringWrapper;
 import java.util.regex.Pattern;
 
 /**
- * Identifies an account in a public cloud, such as AWS or GCP.
+ * Identifies an account in a public cloud, such as {@link CloudName#AWS} or {@link CloudName#GCP}.
  *
  * @author mpolden
  */
 public class CloudAccount extends PatternedStringWrapper<CloudAccount> {
 
+    public static final CloudAccount empty = new CloudAccount("");
+
     public CloudAccount(String value) {
-        super(value, Pattern.compile("^[0-9]{12}$"), "cloud account");
+        super(value, Pattern.compile("^([0-9]{12})?$"), "cloud account");
+    }
+
+    public boolean isEmpty() {
+        return this.equals(empty);
     }
 
 }