presto-redis/src/main/java/io/prestosql/plugin/redis/RedisMetadata.java/RedisMetadata/getColumnMetadata
class RedisMetadata:    @Override
    public ColumnMetadata getColumnMetadata(ConnectorSession session, ConnectorTableHandle tableHandle, ColumnHandle columnHandle)
    {
        convertTableHandle(tableHandle);
        return convertColumnHandle(columnHandle).getColumnMetadata();
    }