code: public Chunk newChunk(String id, String phrase, Span<Term> span) {
      idManager.updateCounter(AnnotationType.CHUNK, id);
      Chunk newChunk = new Chunk(id, span);
      newChunk.setPhrase(phrase);
      annotationContainer.add(newChunk, Layer.CHUNKS, AnnotationType.CHUNK);
      return newChunk;
  }
docs: Creates a chunk object to load an existing chunk. It receives it's ID as an argument. The Chunk is added to the document object.
  @param id chunk's ID.
  @param head the chunk head.
  @param phrase type of the phrase.
  @param terms the list of the terms in the chunk.
  @return a new chunk.