code: public Term newTerm(String id, Span<WF> span) {
  	idManager.updateCounter(AnnotationType.TERM, id);
  	Term newTerm = new Term(id, span, false);
  	annotationContainer.add(newTerm, Layer.TERMS, AnnotationType.TERM);
  	addToWfTermIndex(newTerm.getSpan().getTargets(), newTerm); // Rodrirekin hitz egin hau kentzeko
  	return newTerm;
      }
docs: Creates a Term object to load an existing term. It receives the ID as an argument. The Term is added to the document object.
  @param id term's ID.
  @param type type of term. There are two types of term: open and close.
  @param lemma the lemma of the term.
  @param pos part of speech of the term.
  @param wfs the list of word forms this term is formed by.
  @return a new term.