code: public FileAnnotation getLink(final long linkHashCode) {
          for (FileAnnotation link : links) {
              if (link.getKey() == linkHashCode) {
                  return link;
              }
          }
          throw new NoSuchElementException("Linked annotation not found: key=" + linkHashCode);
      }
docs: Returns the link with the specified hash code.
  
  @param linkHashCode
  the hash code of the linked annotation
  @return the link with the specified hash code