code: Map<String, AtlasVertex> findVertices(List<String> typeNames) throws RepositoryException {
          LOG.debug("Finding vertices for {}", typeNames.toString());
          Map<String, AtlasVertex> foundVertices = graphHelper.getVerticesForPropertyValues(Constants.TYPENAME_PROPERTY_KEY, typeNames);
          return foundVertices;
  
      }
docs: package-private for testing