code: public Set<Artifact> getArtifacts( String groupId, String artifactId, String version )
      {
          Set<Artifact> result = new TreeSet<Artifact>();
          for ( int i = 0; i < stores.length; i++ )
          {
              Set<Artifact> artifacts = stores[i].getArtifacts( groupId, artifactId, version );
              if ( artifacts != null )
              {
                  result.addAll( artifacts );
              }
          }
          return result;
      }
docs: {@inheritDoc}