diff --git a/src/main/java/com/snowflake/kafka/connector/internal/streaming/schemaevolution/iceberg/IcebergColumnTree.java b/src/main/java/com/snowflake/kafka/connector/internal/streaming/schemaevolution/iceberg/IcebergColumnTree.java
index 35a0847be..300ddbd97 100644
--- a/src/main/java/com/snowflake/kafka/connector/internal/streaming/schemaevolution/iceberg/IcebergColumnTree.java
+++ b/src/main/java/com/snowflake/kafka/connector/internal/streaming/schemaevolution/iceberg/IcebergColumnTree.java
@@ -23,6 +23,7 @@ String getColumnName() {
     this.rootNode = new IcebergFieldNode(columnName, pair.getJsonNode());
   }
 
+  /** Add fields from other tree. Do not override nor modify any already existing nodes. */
   IcebergColumnTree merge(IcebergColumnTree modifiedTree) {
     Preconditions.checkArgument(
         this.getColumnName().equals(modifiedTree.getColumnName()),