presto-redis/src/main/java/io/prestosql/plugin/redis/RedisHandleResolver.java/RedisHandleResolver/convertTableHandle
class RedisHandleResolver:    static RedisTableHandle convertTableHandle(ConnectorTableHandle tableHandle)
    {
        requireNonNull(tableHandle, "tableHandle is null");
        checkArgument(tableHandle instanceof RedisTableHandle, "tableHandle is not an instance of RedisTableHandle");
        return (RedisTableHandle) tableHandle;
    }