code: public <K> String get(final K key, Serializer<K> keySerializer) throws HectorException {
      ColumnQuery<K, String, String> q = createColumnQuery(keyspace, keySerializer, serializer, serializer);
      QueryResult<HColumn<String, String>> r = q.setKey(key).
          setName(COLUMN_NAME).
          setColumnFamily(CF_NAME).
          execute();
      HColumn<String, String> c = r.get();
      return c == null ? null : c.getValue();
    }
docs: Get a string value.
  
  @return The string value; null if no value exists for the given key.