code: public <K> void insert(final K key, final String value, Serializer<K> keySerializer) {
      createMutator(keyspace, keySerializer).insert(
          key, CF_NAME, createColumn(COLUMN_NAME, value, serializer, serializer));
    }
docs: Insert a new value keyed by key
  
  @param key   Key for the value
  @param value the String value to insert