docs: public ArchiveCoordinateModel findSingle(String groupId, String artifactId, String version)
      {
          Iterable<ArchiveCoordinateModel> archives = findByGAV(groupId, artifactId, version);
          Iterator<ArchiveCoordinateModel> it = archives.iterator();
          if (!it.hasNext())
              return null;
          ArchiveCoordinateModel archive = it.next();
          if (it.hasNext())
              LOG.warning(String.format("There are multiple %s's like this: %s:%s:%s",
                          ArchiveCoordinateModel.class.getSimpleName(), groupId, artifactId, version));
          return archive;
      }