docs: public DescriptorRepository readDescriptorRepository(InputStream inst)
      {
          try
          {
              RepositoryPersistor persistor = new RepositoryPersistor();
              return persistor.readDescriptorRepository(inst);
          }
          catch (Exception e)
          {
              throw new MetadataException("Can not read repository " + inst, e);
          }
      }