code: public List<DbModule> getAncestors(final String gavc, final FiltersHolder filters) {
          final DbArtifact dbArtifact = getArtifact(gavc);
          return repositoryHandler.getAncestors(dbArtifact, filters);
      }
docs: Return the list of module that uses the targeted artifact
  
  @param gavc String
  @param filters FiltersHolder
  @return List<DbModule>