@Override
    public Node toNode() {
        ObjectNode.Builder builder = Node.objectNodeBuilder();
        if (!conditionKeys.isEmpty()) {
            builder.withMember(CONDITION_KEYS, ArrayNode.fromStrings(conditionKeys));
        }
        return builder.build();
    }
Gets the condition keys used for authorizing against this resource.

@return the condition keys.
smithy-aws-iam-traits/src/main/java/software/amazon/smithy/aws/iam/traits/ActionResource.java