Clojurians Log v2

I have a question on using next.jdbc with the clickhouse jdbc driver. I have a column in a table with type enum, e.g. mycol Enum8('A' = 1, 'B' = 2) When I make a query including that column it shows up in the results as a stringified object, e.g. {:mycol "com.clickhouse.client.api.data_formats.internal.BinaryStreamReader$EnumValue@a983d76"}. I want it to always have the result returned as the string value ("A"/"B" for this example) In my query I can do select toString(mycol) as mycol ... to get it to show as I want it. I've also determined that I need to call (.getString rs ix) on the ResultSet to get what i want:

{:builder-fn
     (rs/as-maps-adapter rs/as-maps
       (fn [rs rsmeta idx]
         (println (.getColumnType rsmeta idx)) ;; 12
         (println (.getType rs)) ;;1003
         (.getObject rs idx)))} 

However when I try

(extend-protocol rs/ReadableColumn
  com.clickhouse.client.api.data_formats.internal.BinaryStreamReader$EnumValue
  (read-column-by-index [^com.clickhouse.client.api.data_formats.internal.BinaryStreamReader$EnumValue val
                         rsmeta idx]
    (.getString val idx)))

It doesn't seem like this ever gets called. Any tips for how I can accomplish always stringifying enum columns like this?