code: @Override
      public SourceLink createSourceLink(final GedObject ged,
              final Source source) {
          if (ged == null || source == null) {
              return new SourceLink();
          }
          final SourceLink sourceLink = new SourceLink(ged, "Source",
                  new ObjectId(source.getString()));
          ged.insert(sourceLink);
          return sourceLink;
      }
docs: {@inheritDoc}