1 files changed, 6 insertions, 0 deletions
diff --git a/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/ExpressionList.java b/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/ExpressionList.java
index e2ff1de7126..57de66f80a0 100644
--- a/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/ExpressionList.java
+++ b/indexinglanguage/src/main/java/com/yahoo/vespa/indexinglanguage/expressions/ExpressionList.java
@@ -4,6 +4,7 @@ package com.yahoo.vespa.indexinglanguage.expressions;
 import com.yahoo.document.DataType;
 import com.yahoo.document.DocumentType;
 import com.yahoo.document.Field;
+import com.yahoo.vespa.indexinglanguage.ExpressionConverter;
 import com.yahoo.vespa.objects.ObjectOperation;
 import com.yahoo.vespa.objects.ObjectPredicate;
 
@@ -11,6 +12,7 @@ import java.util.Collections;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Objects;
 
 /**
  * @author Simon Thoresen Hult
@@ -26,6 +28,10 @@ public abstract class ExpressionList<T extends Expression> extends CompositeExpr
         }
     }
 
+    protected List<Expression> convertChildList(ExpressionConverter converter) {
+        return asList().stream().map(converter::convert).filter(Objects::nonNull).toList();
+    }
+
     @Override
     public void setStatementOutput(DocumentType documentType, Field field) {
         for (Expression expression : expressions)