elements.stream()
                .map( elem ->
                        [bind a prepared statement that restricts all the clustering columns, restrict the enum column, and restrict the collection column to contain "enum" ) )
                .map( session::executeAsync )
                .map( ResultSetFuture::getUninterruptibly )
                .peek( rs -> {
                // double check the result set we are getting back
                    int bad = 0;
                    for(Row row : rs ){
                        if( [clustering columns of row satisfy the specified restriction] ){
                            System.out.println( "LIFE'S GOOD" );
                        } else {
                            bad++;
                            System.out.println( "LIFE SUCKS" );
                        }
                    }
                    System.out.println( "This query fails " + bad + " times." );
                })