code: @SuppressWarnings("unchecked")
      public CassandraJavaPairRDD<K, V> where(String cqlWhereClause, Object... args) {
          CassandraRDD<Tuple2<K, V>> newRDD = rdd().where(cqlWhereClause, toScalaSeq(args));
          return wrap(newRDD);
      }
docs: Adds a CQL {@code WHERE} predicate(s) to the query.
  <p/>
  Useful for leveraging secondary indexes in Cassandra. Implicitly adds an {@code ALLOW FILTERING}
  clause to the {@code WHERE} clause, however beware that some predicates might be rejected by
  Cassandra, particularly in cases when they filter on an unindexed, non-clustering column.