presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/CassandraColumnHandle.java/CassandraColumnHandle/toString
class CassandraColumnHandle:    @Override
    public String toString()
    {
        ToStringHelper helper = toStringHelper(this)
                .add("name", name)
                .add("ordinalPosition", ordinalPosition)
                .add("cassandraType", cassandraType);

        helper.add("partitionKey", partitionKey)
                .add("clusteringKey", clusteringKey)
                .add("indexed", indexed)
                .add("hidden", hidden);

        return helper.toString();
    }