code: public <K, V> SortingBufferMaker<K, V> createSortingBuffer( BTreeKeySerializer<K> keySerializer,
                                                                  Serializer<V> valueSerializer ) {
          return new MakeSortingBuffer<K, V>("buffer-" + dbCounter.incrementAndGet(), keySerializer, valueSerializer);
      }
docs: Obtain a maker object that can create a new {@link SortingBuffer} that will keep a single values for any given key.
  
  @param keySerializer the serializer for the keys
  @param valueSerializer the serializer for the values
  @return the maker; never null