code: @Override
      protected Graph doConvert(final Set<ClassDoc> toConvert) {
  
          final ClassDoc[] clDocs = toConvert.toArray(new ClassDoc[toConvert.size()]);
          final SortedMap<PackageDoc, SortedSet<ClassDoc>> clPerPackage = Comparators.sortClassesPerPackage(clDocs);
  
          final Map.Entry<PackageDoc, SortedSet<ClassDoc>> packageAndClasses = clPerPackage
                  .entrySet()
                  .stream()
                  .filter(e -> relevantPackage.getName().equalsIgnoreCase(e.getKey().name()))
                  .findFirst()
                  .orElseThrow(() -> new IllegalStateException("No retrieved classes in expected package ["
                          + relevantPackage.getName() + "]. Found: "
                          + clPerPackage.keySet().stream().map(Doc::name).reduce((l, r) -> l + ", r")
                          .orElse("<none>")));
  
          final PackageDoc packageDoc = packageAndClasses.getKey();
          final SortedSet<ClassDoc> classDocs = packageAndClasses.getValue();
  
          // Create the Graph.
          final Graph toReturn = new Graph("Graph_" + packageDoc.name(), true, true);
  
          final Subgraph packageSubgraph = new Subgraph(packageDoc.name());
          final CommonGraphAttributes subgraphAttrs = new CommonGraphAttributes();
          packageSubgraph.add(subgraphAttrs);
  
          final GraphAttributes subAttrs = subgraphAttrs.getAttributes();
          subAttrs.label = "Package: " + packageDoc.name();
  
          // Add a Subgraph for the package
          toReturn.add(renderPackageSubGraph(classDocs));
  
          // All Done.
          return toReturn;
      }
docs: {@inheritDoc}