docs: public synchronized JavaClassModel getOrCreatePhantom(String qualifiedName)
      {
          JavaClassModel result = resolveByQualifiedName(qualifiedName);
          if (result == null)
          {
              // create a phantom
              result = new GraphService<>(getGraphContext(), PhantomJavaClassModel.class).create();
              setPropertiesFromName(result, qualifiedName);
          }
          return result;
      }